Fix permission checks in member row (backport from gitlab-org/gitlab-ee!460)
## What does this MR do?
It improves the check we use to display or not the members' access and controls in the members list.
## Are there points in the code the reviewer needs to double check?
No, I replaced an helper with just a permission check so I think it's a better solution.
## Why was this MR needed?
There were a spec failure in gitlab-org/gitlab-ee!460 because of the refactor done in the "request access" MR.
## What are the relevant issue numbers?
None.
## Does this MR meet the acceptance criteria?
- No CHANGELOG needed
- [x] Tests
- [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 !4670
Fixed issue with bold in issuable sidebar
## What does this MR do?
~~The sidebar contained both normal font weight & bold font weight, so this standardises them to bold.~~
After looking at the designs, i've updated the font weights & colors throughout the sidebar to correctly match them
## Screenshots (if relevant)

See merge request !4398
Improve usability for prioritized labels
## What does this MR do?
- Adds an icon next to prioritized label rows serving as a hint to the user that the labels can be sorted by dragging them.
- Adds description about prioritized labels.
- Restores empty message when removing all prioritized labels.
## Screenshots (if relevant)

Closes#18575
See merge request !4652
Show number of processed MRs in milestone page
closes#14025

See merge request !4006
Manually create todo for issuable
## What does this MR do?
Adds a button to the sidebar in issues & merge requests to allow users to manually create a todo item themselves.
## What are the relevant issue numbers?
Closes#15045
## Screenshots (if relevant)



See merge request !4502
+ Move 'Edit Project/Group' out of membership-related partial
+ Show the access request buttons only to logged-in users
+ Put the request access buttons out of in a more visible button
+ Improve the copy in the #remove_member_message helper
Signed-off-by: Rémy Coutable <remy@rymai.me>
Resolve ""When this merge request is accepted, this issue will be closed automatically" rendered twice"
## What does this MR do?
1. Only show the above text when there is an MR that will close the issue, and even then, only show it once.
2. Apply 98f147e84d2bd8f2278452ac0852118452c76d4a to a bunch of other places that need it.
## Are there points in the code the reviewer needs to double check?
¯\_(ツ)_/¯
## Why was this MR needed?
Some pages were broken.
## What are the relevant issue numbers?
Fixes#18446.
## Screenshots (if relevant)
Before:

After:

## Does this MR meet the acceptance criteria?
- [ ] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- [ ] Tests
- [ ] Added for this feature/bug
- [ ] All builds are passing
- [ ] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [ ] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)
See merge request !4594
Update activity SVG path
## What does this MR do?
Fixes SVG path so the activity icon is the correct color
## Screenshots (if relevant)
<img src="/uploads/ea948338ea816890851a8011b8b3255f/Screen_Shot_2016-06-09_at_8.43.05_AM.png" width="600px">
See merge request !4563
Fixed issue where label filtering didnt work
## What does this MR do?
The filterable option was missing which meant labels in the dropdown couldn't be filtered. This fixes that.
## What are the relevant issue numbers?
Closes#18375
See merge request !4556
Add milestone expire date to the right sidebar
## What does this MR do?
Shows milestone expire date tooltip in the sidebar. It also shows the tooltip when sidebar is collapsed.
## Are there points in the code the reviewer needs to double check?
`common_utils.js.coffee` and `milestones_helper.rb` should be reviewed deeply.
## What are the relevant issue numbers?
https://gitlab.com/gitlab-org/gitlab-ce/issues/17355
## Screencast

See merge request !4448
Improve ui consistency. Part 2
* Use responsive top-area on project branches and tags pages
* Use default button size in the content list controls
* Improve button margin for btn-grouped css class
For https://gitlab.com/gitlab-org/gitlab-ce/issues/18324
See merge request !4536
Add new icons in left sidebar and layout nav
Closes#17609Closes#17240Closes#17321


@skyruler I couldn't find the icons for `Projects`, `Merge Requests`, `Snippets`, or `Help` in the design repo. Do you have them available somewhere?
See merge request !4268
Improve ui consistency
* Decline idea of using gray buttons actively in UI
* remove icons from some buttons that already has text
* standardizes margin between buttons
First step in https://gitlab.com/gitlab-org/gitlab-ce/issues/18324
See merge request !4533
Removable labels from filtered issuables label bar
When filtering by labels, a remove button appears next to each label. This then removes that label & refreshes the issuable filter form

Closes#15474
See merge request !4178
Backported from EE shared form for web hooks
## What does this MR do?
EE uses a shared form for web hooks - so this brings that across to CE.
See merge request !4457