Merge branch '22191-delete-dynamic-envs-mr' of gitlab.com:gitlab-org/gitlab-ce into 22191-delete-dynamic-envs-mr

Apply better hierarchy to markdown headers and issue/mr titles

## What does this MR do?
Applies better hierarchy to markdown headers and issue/mr titles

## Why was this MR needed?
Titles of issues/mr's were smaller than h1, leading to strange hierarchy when reading descriptions

## Screenshots (if relevant)

### Before:
![Screen_Shot_2016-10-14_at_1.31.37_PM](/uploads/79b6b16b8ed1b3b49578161eea1f0e42/Screen_Shot_2016-10-14_at_1.31.37_PM.png)

### After:
![Screen_Shot_2016-10-14_at_1.31.26_PM](/uploads/f710b63c112e342c5429810984079da6/Screen_Shot_2016-10-14_at_1.31.26_PM.png)

## 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 [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [ ] 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 it does - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?
Closes #21395

See merge request !6904

Fix toggling of expand/hide pipeline graph button

## What does this MR do?

Corrects the toggling behaviour given that the pipeline graph now starts in a different state.

## Are there points in the code the reviewer needs to double check?

## Why was this MR needed?

Expand/hide toggling UI is buggyyy

## Screenshots (if relevant)

![2016-10-14_18.15.41](/uploads/7cdeef02c0b8aa4266f2878866e4b633/2016-10-14_18.15.41.gif)

## 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 [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [ ] 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 it does - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?


Closes #23358

See merge request !6898

Rename users routing from /u/:username to /users/:username for
consistency with other routes

Renames /u/:username to /users/:username

To follow consistency with other routes (like groups) and
UsersController name.
Now when you can use `/:username` for accessing user page there is no
need in shortcut like `/u/`

See merge request !6851

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Fixed find file keyboard navigation

## What does this MR do?

The code to view a file on find file page was removed, this adds that back in & adds some tests.

## What are the relevant issue numbers?

Closes #23423

See merge request !6944

Resolve "No space between buttons on Files page"

## What does this MR do?

Adds a `.download-button` class to the project download button and added `10px` of margin to this button within the `.tree-controls`.

## Are there points in the code the reviewer needs to double check?

## Why was this MR needed?

Whitespace is gr8!

## Screenshots (if relevant)

![Screen_Shot_2016-10-16_at_14.05.09](/uploads/2da692bd55e06c730d048ccf9173bd2c/Screen_Shot_2016-10-16_at_14.05.09.png)

## 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 [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [ ] 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 it does - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?


Closes #23380

See merge request !6921

Enable activerecord_sane_schema_dumper for test

## What does this MR do?
Enable `activerecord_sane_schema_dumper` for test allowing to use `test` database for consistent schema generation.

See merge request !6931

Closes #23423

Updated logo from @luke

Closes #23274

See merge request !6942

[ci skip]
Signed-off-by: Rémy Coutable <remy@rymai.me>

Merge branch '22191-delete-dynamic-envs-mr' of gitlab.com:gitlab-org/gitlab-ce into 22191-delete-dynamic-envs-mr

Fix broken specs on MySQL

## What does this MR do?
Fixes broken master after https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/6896

See merge request !6935

Fix Test Env (proper error handling when gitlab-shell is not clonned)

## What does this MR do?

If we were not able to clone gitlab-shell we have to stop all test suite, for now we run it regardless we cloned it or not.

## Why was this MR needed?

To not confuse developers when build is red, to get fasts feedback, to save resources and time.

See merge request !6933

Fix Safari displaying NaN for selected due date

## What does this MR do?

1. Stops using `Date.parse` to parse selected due dates. 
2. Refactors DueDateSelectors to be more maintainable and readable

## Are there points in the code the reviewer needs to double check?

**To review the actual fix, look here:** https://gitlab.com/gitlab-org/gitlab-ce/commit/4ad43ac3a12902d7ea01dc09f8a361b01c21a0ee. It would be difficult to pick out from the overall diff. 

## Why was this MR needed?

In Safari, the due date selector was displaying 'NaN' when a date is selected, which was being returned by `Date.parse`. Because `Date.parse` is implemented differently across browsers it's generally recommended to favor implicit Date parsing with the `Date` constructor. For more background on this, [see MDN on Date.parse](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Date/parse).

Also, the code for DueDateSelector was pretty messy, and its logic was very tightly coupled, so I refactored it. None of the basic logic changed, I just broke it up into smaller pieces and made it more OO. 

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/22984

See merge request !6797

Fix randomly crashing spinach test for merge request

For https://gitlab.com/gitlab-org/gitlab-ce/issues/23378

See merge request !6932