Fixed size of buttons in branches list
## What does this MR do?
The buttons on the branch list were using `btn-xs` this MR removes that so the buttons are a normal size to match https://gitlab.com/gitlab-org/gitlab-ce/tags
## What are the relevant issue numbers?
#18677
## Screenshots (if relevant)

See merge request !4735
Aligns create merge request button vertically
## What does this MR do?
Based on https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/4644#note_12507178 I have vertically aligned the button correctly.
## Screenshots (if relevant)
Here is my awesome screenshot to show it is centered vertically

See merge request !4733
1. An exception would be raised if the filter was called with an invalid
URI. Mainly because we weren't catching the `Addressable` exception.
2. This commit fixes it and adds a spec for the filter.
Implement custom notification level options


part of #12758
See merge request !4389
Ensure that group owner cannot request access to a project of their group
## What does this MR do?
It fixes two things:
- 91ad995d69e1a0f8991fd896f1d9febc109273fe Ensure that group owner cannot request access to a project of their group
- ec3ff061148d556757e7cd486cdc6083d77acf34 Ensure group/project owners can see their members' access_level (see the commit message for details)
## Are there points in the code the reviewer needs to double check?
Not really, these are pretty simple fixes.
## Why was this MR needed?
Because there was an issue created!
## What are the relevant issue numbers?
Fixes#18717.
## Does this MR meet the acceptance criteria?
- [x] CHANGELOG is not needed since the bug is only present in a 8.9 RC
- [x] Tests
- [x] Added for this feature/bug
- [x] 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 !4729
Ensure Todos counters doesn't count Todos for projects pending delete
Use `TodosFinder` instead of `current_user.todos` to filter projects
pending delete on Todos counters helpers.
Counters should not reflect the number of Todos displayed on the tabs.
Fixes#18633
See merge request !4663
Disable the unlink feature for SAML connected accounts (social login).
This disables the ability to manually unlink your SAML account, if you have one connected. In certain scenarios, the only allowed login mechanism can be SAML, and if you unlink your account you will be locked out of the system (configuration dependent).
Fixes#18613
See merge request !4662
Do not check repos without push events
Reduce false positives from automatic repository checks by skipping
projects without push events.
See merge request !4684
Fixed issue with assignee dropdown not selecting correctly
## What does this MR do?
Fixes an issue with assignee dropdown not selecting correctly.
See merge request !4762
Track method call times/counts as a single metric
This changes method call tracking so only a single metric is emitted regardless of the number of calls. This allows us to more accurately measure the total execution time of a method as well as the number of times a method is called. See 851e3ff7578973c2206628424eac3b951a3c656d for more details.
Method call tracking tracked calls individually meaning the end statistics may not always be accurate enough to get a good understanding of where time is spent.
See merge request !4754
Added API endpoint for Sidekiq Metrics.
## What does this MR do?
It adds an API endpoint to gather metrics about Sidekiq, it's jobs, queues, and processes.
## Why was this MR needed?
There was no API endpoint for Sidekiq information.
## What are the relevant issue numbers?
Fixes#7171
## Does this MR meet the acceptance criteria?
- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [x] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [x] API support added
- [x] Tests
- [x] Added for this feature/bug
- [x] All builds are passing
See merge request !4653
Previously we'd create a separate Metric instance for every method call
that would exceed the method call threshold. This is problematic because
it doesn't provide us with information to accurately get the _total_
execution time of a particular method. For example, if the method
"Foo#bar" was called 4 times with a runtime of ~10 milliseconds we'd end
up with 4 different Metric instances. If we were to then get the
average/95th percentile/etc of the timings this would be roughly 10
milliseconds. However, the _actual_ total time spent in this method
would be around 40 milliseconds.
To solve this problem we now create a single Metric instance per method.
This Metric instance contains the _total_ real/CPU time and the call
count for every instrumented method.
- As todos are created/updated inside the TodoService
we repopulate the cache just there for both pending/done todos
- Todos as mark as done from the TodosController we update cache
there too
- All the added methods are kept in the User class for cohesion
- Make it more explicit that `source` must respond to `#group` and that
`#group` must be present.
- Indent subsequent lines of a multi-line condition.
Signed-off-by: Rémy Coutable <remy@rymai.me>
Allow customising of queries used for `update_column_in_batches`
This MR makes two changes to `add_column_with_default` and `update_column_in_batches`:
1. `add_column_with_default` no longer wraps the entire set of updates in a single transaction, preventing any locks from sticking around for the duration of the entire transaction
2. `update_column_in_batches` now takes a block which can be used to customise the queries. This uses Arel as messing with raw SQL strings is a total pain
In !4381 there's a need for updating existing rows/columns in a table in batches using a custom `WHERE` condition. Without the changes in this MR this would not be possible.
See merge request !4680
Upgrade Ruby 2.2 tests to 2.3
This changes the GitLab CI Tests that test compatibility with Ruby 2.2
to instead test compat with Ruby 2.3.
We’ve discussed skipping straight to 2.3.0 when next upgrading the
required Ruby version.
Since Rails 5 requires 2.2.2, and we have to upgrade anyway, may as
well do it now and not risk having to upgrade again come Rails 5.1 or
5.2.
Test failures on Ruby 2.3 do not fail the build.
Related: #12507, #12835
See merge request !3807