Fixes issue with file view rows not clickable on project main view
Fixed an issue where it would only load the first 25 commit data on project main view.
Stopped the file view sending 1 too many requests.
Fixes#3916
See merge request !2933
Issues can be dragged & dropped into empty milestone lists
This is also possible with MRs. Also fixed an issue where MRs weren't sortable
Fixes#13668

See merge request !2935
Fixed mis-aligned buttons on dashboard/issues
Before:

After:

See https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/2921#note_3868715
See merge request !2932
Changed the size of status indicators


Closes#12763
See merge request !2913
Add Todos
Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/2425
Tasks:
- Prepare database
- [X] Create a new table (`todos`)
- Tasks Queue view
- [X] Add a number icon showing the number of todos on the top right next to the new and logout button that will redirect the user to the todos page
- [X] Add a chronological list of todos, with the 'Todos' tab active by default
- [X] Add a 'Done' button to each todo
- [x] Add filters (project, author, type, and action)
- Todos generation
- [X] When user issue/mr is assgined to someone
- [x] When user is mentioned on (issues/mr's/comments)
- Mark todo as `done`
- [X] When clicks on the 'Done' button
- [X] When edit issue/mr
- [X] When left/edit a comment
- [X] When reassign issue/mr
- [X] When add/remove labels to issue/mr
- [X] When issue/mr is closed
- [X] When mr is merged
- [X] When added an emoji
- [X] When changed the issue/mr milestone
* Screenshot:

See merge request !2817
Award emoji supports retina displays
Based on discussion in !2800
There is now a retina spritesheet for emojis. It is 2mb, don't know how big an issue that is.
Before:

After:

Also updated the rake task to make the @2x spritesheet https://gitlab.com/snippets/15348
cc\ @rspeicher @vsizov
See merge request !2891
Update Gemojione for new hotness ✨
Before | After
------ | -----
 | 
See merge request !2800