Remove release docs from the CE repository

More detailed, updated, and accurate versions of these docs now live in
https://gitlab.com/gitlab-org/release-tools

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/2346

[ci skip]

See merge request !3393

Add links to CI setup documentation from project settings and builds pages

For #14483 
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

See merge request !3384

Fix link colors after recent UI refactoring

cc @jschatz1 

See merge request !3404

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

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

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

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

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

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

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

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

Clarify LFS configuration

A user on Twitter was confused (rightfully so) because LFS admin docs suggest you must set a storage path. In fact, Omnibus defaults to a very sane location. Add a comment to the snippet outlining the default.

See merge request !3388

More detailed, updated, and accurate versions of these docs now live in
https://gitlab.com/gitlab-org/release-tools

[ci skip]

Fix cancel button on issuable edit form

See merge request !3392

Fixes #14585.

Comments on confidential issues doesn't show in activity feed to non-members

Closes #14568 

See merge request !3375

Fixed issue with width of project select dropdown

Before:

![Screen_Shot_2016-03-24_at_13.42.53](/uploads/25580c45dc339f7f932f032ac2d10fba/Screen_Shot_2016-03-24_at_13.42.53.png)

![Screen_Shot_2016-03-24_at_13.43.04](/uploads/e4d1d4e332d27f14c980264bef9dc4d9/Screen_Shot_2016-03-24_at_13.43.04.png)

After:

![Screen_Shot_2016-03-24_at_13.42.38](/uploads/68b8e161d86b41849f9e8a1d9c8fd36c/Screen_Shot_2016-03-24_at_13.42.38.png)

![Screen_Shot_2016-03-24_at_13.43.13](/uploads/f3fe732bcd517efea3a1d7c761bb6a0e/Screen_Shot_2016-03-24_at_13.43.13.png)

See merge request !3386

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

Fixed bold in sidebar

![Screen_Shot_2016-03-23_at_12.01.54](/uploads/d50ae3426efcb2436b3debdd80073b2f/Screen_Shot_2016-03-23_at_12.01.54.png)

This is to go with https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/289

See merge request !3358

Shows password form when signed in with linked account

Closes #14379

Doing this to get the builds passing for !3325

See merge request !3381

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

Explain why ExclusiveLease has no #cancel

[ci skip]

See merge request !3383

Merge branch 'add-tooltip-to-issue-new-branch-button-with-create-branch-issue-title-123-14565' into 'master'

Add tooltip to new branch button

Closes #14565

See merge request !3380

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

[ci skip]

Closes #14379

Fix specs broken by !3270 and !3337.

To be fair:

- !3270 modifies CSS but `scss-lint` job was allowed to fail in the MR, while not allowed in `master`
- !3337 modifies HTML but the broken test was only in `master` at the time

/cc @alfredo1 @iamphill 

See merge request !3378

Dropdown pixel perfect 🎉

Closes #14333, #14331, #14472, #14515 

See merge request !3337