Users don't get instructions to push to other users empty projects
Fixes#12518

See merge request !2923
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
Extend specs for summary build status
Additional specs cover a case when one of the builds is running but
allowed to fail. Previous implementation returned `running` status,
which is wrong. This behavior has been changed in 8.5, this commit adds
missing specs.
See merge request !2904
Show project visibility level on project list
Fixes#3779

See merge request !2908
Ensure we don't check a commit's description for revert message if it has no description
Fixes#13631.
/cc @razer6 @grzesiek @yorickpeterse @rdavila
See merge request !2917
Changed the size of status indicators


Closes#12763
See merge request !2913
Only show up or down votes icon on issue list if there are any
Closes#13649

See merge request !2909
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