Fix: Infinity Bug in Commit Statistics
## What does this MR do?
It fixes a logic bug in the commits statistics: The code assumed that the amount of days involved in a commit range is equal to the difference between the first and last date. This is not true, though, as (from a human standpoint), a commit yesterday and a commit today involve two days, not one. Similarly, a fresh project with only commits made today already 'used' one day.
Since the number of involved days used to be zero for new projects, the result for commits per day quite often amounted to `Infinity`…
## Are there points in the code the reviewer needs to double check?
The test file. I hope it is up to the standards of GitLab.
## Why was this MR needed?
The bug occurres especially for new users with their first project while exploring GitLab.
## What are the relevant issue numbers?
This bug was reported as #1548.
## Screenshots (if relevant)
See merge request !4231
Added setting to set new users by default as external
## What does this MR do?
This implements the feature request #14508. It adds an option in the application settings to set new users by default as external.
## Are there points in the code the reviewer needs to double check?
Everything. Like I mentioned in the discussion of the issue my knowledge of Ruby basically doesn't exists. I tested it on my machine and it seems to work, but as I am very unexperienced in Ruby I highly recommend to take a close look at the code.
## Why was this MR needed?
It was requested by @DouweM to work on the issue with the proposed changes by me.
## What are the relevant issue numbers?
This MR is for the issue #14508 that followed up after the implementation of #4009.
See merge request !4545
Link to the user's profile in the abuse reports
Link to the user's profile in the abuse reports and add a link to the
admin area view if the user viewing the profile is an admin
Fixes#9127
See merge request !5118
Allow specifying protected branches using wildcards
Closes#18627
# Tasks
- [ ] #18627!4665 Allow specifying protected branches using wildcards
- [x] Find existing usages of protected branches
- Protecting branches
- `ProtectedBranchesController` is used to mark a branch protected/unprotected
- `API::Branches` can be used to mark a branch protected/unprotected
- Enforcing branch protection
- `Gitlab::GitAccess` has helpers (`can_push_to_branch?`, `check`) that are used to deny pushes if a branch is protected
- Over SSH: `gitlab-shell` receives a push, and calls `/allowed` on the GitLab API, which calls `GitAccess.check`
- Over HTTP:
- `gitlab-workhorse` receives the request, and forwards it to rails
- Rails (in the `GitHttpController#git-recieve-pack`) runs basic checks (is the user logged in, not protected branch checks) and returns ok with `GL_ID` and `RepoPath`
- `gitlab-workhorse` looks at the response, and calls the relevant `gitlab-shell` action from `git-http/handlePostRPC`
- Rest of this flow is the same as the SSH flow above
- [x] Implementation
- [x] Backend
- [x] Change `project#protected_branch?` to look at wildcard protected branches
- [x] Change `project#developers_can_push_to_protected_branch?`
- [x] Change `project#open_branches`
- [x] Better error message when creating a disallowed branch from the Web UI
- [x] Frontend
- [x] Protected branches page should allow typing out a wildcard pattern
- [x] Add help text explaining the use of wildcards
- [x] Show matching branches for each protected branch
- [x] ~~On the index page~~
- [x] On a show page
- [x] Index?
- [x] Can't have the "last commit" column for wildcard protected branches
- [x] Fix / write tests
- [x] What happens if a hook is missing in dev?
- [x] Refactor
- [x] Test workflows
- Create a branch matching a wildcard pattern
- Push to a branch matching a wildcard pattern
- Force push to a branch matching a wildcard pattern
- Delete a branch matching a wildcard pattern
- [x] Test using Web UI
- [x] Test over SSH
- [x] Test over HTTP
- [x] Test as developer and master
- [x] Investigate performance
- [x] Test with a large number of protected branches / branches
- [x] Paginate list of protected branches
- [x] ~~Possibly rewrite `open_branches`~~
- [x] Add `iid`s to existing `ProtectedBranch`es
- [x] Add documentation
- [x] Add CHANGELOG entry
- [x] Add screenshots
- [x] Make sure [build](https://gitlab.com/gitlab-org/gitlab-ce/commit/2f753e3ed2ce681b4444944d521f4419e8ed37f7/builds) passes
- [x] Assign to endboss for review
- [x] Address @DouweM's comments
- [x] `protected_branch_params`
- [x] `exact_match` instead of `explicit_match`
- [x] When would self.name be blank?
- [x] Move `protected_branches.each` to a partial
- [x] Move `matching_branches.each` to a partial
- [x] If the branch is in @matching_branches, it's not been removed
- [x] move this regex to a method and memoize it
- [x] `commit_sha` directly for exact matches
- [x] Number of matches for wildcard matches, with a link
- [x] Wait for [build](https://gitlab.com/gitlab-org/gitlab-ce/commit/43f9ce0e88194b8f719bb1c1e656b7fc13278d56/builds) to pass
- [x] Respond to @DouweM's comments
- [x] Don't use iid
- [x] Controller should use `@project.protected_branches.new`
- [x] move the memoization to `def wildcard_regex`
- [x] render with `collection: @protected_branches`
- [x] Wait for [build](https://gitlab.com/gitlab-org/gitlab-ce/commit/f7beedf122fa0c7aa89e86181fe7499321fb10ca/builds) to pass
- [x] Wait for @DouweM's review
- [x] Wait for @jschatz1's review
- [x] Respond to @jschatz1's comments
- [x] Use the new dropdown style
- [x] description should be moved to the description section without the styling
- [x] Protect button should be disabled when no branch is selected
- [x] Update screenshots
- [x] Merge conflicts
- [x] Make sure [build](https://gitlab.com/gitlab-org/gitlab-ce/commit/20f3cfe8d5540eab64c2ba548043d600b28c61ba/builds) passes
- [ ] Revisit performance, possibly with staging/production data
- [ ] Get a dump of staging / run against staging live
- [ ] Get SSH access to staging
- [ ] Wait for review/merge
# Screenshots
## Creating wildcard protected branches




### Using the `GLDropdown` component

## Enforcing wildcard protected branches
### From the Web UI

### Over SSH

### Over HTTPS

## Listing matching branches

See merge request !4665
Added blank state to issues
## What does this MR do?
Adds new blank state to issues when no issues exist.
Part of #18519
## Screenshots (if relevant)

See merge request !4908
New diff notes
Fixes#12732, #14731, #19375, #14783
Builds on https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/4110
To do:
- [x] Get it mostly working
- [x] Validate position validity
- [x] Fix: Don’t link to `#`
- [x] Fix: Base ref can be `nil`, potentially, when the MR has an oprhan source branch => Yep, doesn’t work. We need to store a `start_id`
- [x] Optimize: Fewer duplicate `git diff` compares
- [x] Optimize: Pass paths to `PositionTracer#diff` for faster diffs
- [x] Refactor: Use `head_id` in `MergeRequest`/`MergeRequestDiff` instead of `source_sha`
- [x] Refactor: Convert existing array-based diff refs to the DiffRefs model
- [x] Tweak: Use `note_type` in `Autosave` key
- [x] Tweak: Remove `line_code: note.line_code` from `link_to_reply_discussion`
- [x] Update: `SentNotifications` and reply-by-email receiver
- [x] Update: MR diff notification email
- [x] Update: API (MR, Commit note creation and entity)
- [x] Update: GitHub importer
- [x] Address any other TODO comments
- [x] Fix: Suppress "edited 4 minutes ago"
- [x] Write tests
- [x] `LineMapper`
- [x] `PositionTracer`
- [x] `Position`
- [x] `DiffPositionUpdateService`
- [x] `DiffNote`
- [x] `MergeRequests::RefreshService` / `MergeRequest#update_diff_notes_positions`
- [x] Make sure commits with diff notes don't get cleaned up, since this would prevent the diff notes from being rendered (https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5062)
Future improvements:
- Display unresolved comments on files outside the diff, if the comment was added when that file _was_ part of the diff
- Allow commenting on sections between hunks, when expanding the diff using `...`
- (We'd need to generate line code based on Position if we have it, even if it falls outside bounds of diff)
- `diff_hunk` on diff note API entity
- Show diff hunk in notification email
- Resolved line notes would have a boolean, and be inactive through `notes.any? { !active? || resolved? }`
- Multi line notes would store a number of positions, and do the right thing (™) in grouping and then rendering if the first item is multiline? => true
- Image diff notes could store x,y,width,height instead of old_line,new_line for similar grouping. Does it need a reference to say if it's on old or new? These can't have line_codes, clearly. Rendering would be interesting.
- Show commit line comments in the MR diff
- Comment on specific selected words
- Comment on file header
- Unfold top of discussion diff note
- New diff notes API for commits and MRs
/cc @rspeicher
See merge request !4101
Exclude projects pending delete from notifications
Make `NotificationSetting.for_projects` exclude projects that are excluded by the default scope on `Project`. (At the moment, that's projects with `pending_delete: true`.)
See https://gitlab.com/gitlab-com/support-forum/issues/819
See merge request !5138
If the Sidekiq job fails for some reason, a project can be 'stuck'
pending deletion. The project can't be viewed, so it shouldn't be
available through the notification settings association as this will
throw an exception when we try to show the link.
As requested by the issue #14508 this adds an option in the application
settings to set newly registered users by default as external. The
default setting is set to false to stay backward compatible.
1. The `open_branches` method is used to provide a list of branches
while creating a protected branch.
2. It makes sense to include branches which are matched by one or more
wildcard protected branches, since the user might want to make exact
protected branches from these as well.
3. This also provides a large performance improvement. On my machine, in
a project with 5000 branches and 2000 protected branches, the
`ProtectedBranches#index` page went from a 40 seconds load time to 4
seconds (10x speedup).
1. Modify the component to support a callback for every key press in the
filter. We need this so we can update the "Create: <branch_name"
label.
2. Modify the component to use `$(<selector>).first().click()` instead
of `$(selector)[0].click()`, because the latter is non-standard, and
doesn't work in PhantomJS.
Get rid of pluralize on stage names
## What does this MR do?
Removes `pluralize` from stage names
## What are the relevant issue numbers?
Closes#18283
Part of https://gitlab.com/gitlab-org/gitlab-ce/issues/18920
## Screenshots (if relevant)

cc @ayufan
See merge request !5117
Fix importer for GitHub Pull Requests when a branch was reused across Pull Requests
Closes#17766
## What does this MR do?
GitHub importer fails when a repository has two Pull Requests, with the same branch name and different SHA, one of which was closed without merging, and one which is open or was merged in. This happens because we only checks if the branch exists in the [Gitlab::GithubImport::BranchFormatter#exists?](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/lib/gitlab/github_import/branch_formatter.rb#L6-8), before creating the missing references on Github. With this MR we check if both branch, and SHA exists in the current project. If no, we create the missing reference on GitHub before import the PR.
## Are there points in the code the reviewer needs to double check?
Nope.
## Why was this MR needed?
Github importer will fail if branch was reused across Pull Requests.
## What are the relevant issue numbers?
https://gitlab.com/gitlab-org/gitlab-ce/issues/19439
/cc @royaldark @thomasjachmann
See merge request !5103
Fix diff comments not showing up in activity feed
## What does this MR do?
It fixes the detection of note events to check for `Note` and `LegacyDiffNote`.
## Are there points in the code the reviewer needs to double check?
No? /cc @DouweM (since I believe you introduced `LegacyDiffNote`
## Why was this MR needed?
To fix#19092.
## What are the relevant issue numbers?
Fixes#19092.
## Does this MR meet the acceptance criteria?
- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- Tests
- [x] Added for this feature/bug
- [ ] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)
See merge request !5069
Fixing URL validation for import_url on projects
Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/17536
This MR fixes problems related to bypassing `import_url` validation on projects. This makes sure the URL is properly validated so we don't enter crap and fail while running workers that handle this URL.
It also adds a migration to fix current invalid `import_url`s
See merge request !4753