Remove show actions from Admin and Project DeployKeys

Example styling after:

> ![Screen_Shot_2015-06-03_at_6.04.51_PM](https://gitlab.com/gitlab-org/gitlab-ce/uploads/105801a7e390224066721bba200c4909/Screen_Shot_2015-06-03_at_6.04.51_PM.png)

Closes #1741

See merge request !763

Also style all key fingerprints consistently across the app.

Add 2FA docs

See merge request !757

Group improvements

* remove projects before removing group
* execute all hooks/events from project destroy when group removed
* log group create/remove
* delay remove of namespace directory (to prevent NFS issues)

Inspired by !759

See merge request !761

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

Remove gitlab:env:check task.

Rake task that checks for git user git settings is a leftover from early days.

It is not being used by the web editor(and web editor is also being redone atm) so this rake task just causes confusion.

Adresses internal issue https://dev.gitlab.org/gitlab/gitlabhq/issues/2362

See merge request !758

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

Conflicts:
	spec/features/projects_spec.rb

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>

Conflicts:
	spec/features/projects_spec.rb

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>

LDAP users should not control their LDAP email

If they can, they can take over arbitrary GitLab accounts.

See merge request !1837

Add "Resend confirmation e-mail" link in profile settings

Adds a convenience link to resend the confirmation e-mail if necessary. Before, user had to logout or open an Incognito Window to do this.

Screenshot:

![image](https://gitlab.com/gitlab-org/gitlab-ce/uploads/700e6d98e1c5b58726fbed4e52a09c06/image.png)

Fixes https://github.com/gitlabhq/gitlabhq/issues/9274

See merge request !634

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

Ths commit does next:

* When we remove project we move repository to path+deleted.git
* Then we schedule removal of path+deleted with sidekiq
* If repository move failed we abort project removal

This should help us with NFS issue when project get removed but
repository stayed. The full explanation of problem is below:

* rm -rf project.git
* rm -rf removes project.git/objects/foo
* NFS server renames foo to foo.nfsXXXX because some NFS client (think
* Unicorn) still has the file open
* rm -rf exits, but project.git/objects/foo.nfsXXX still exists
* Unicorn closes the file, the NFS client closes the file (foo), and the
* NFS server removes foo.nfsXXX
* the directory project.git/objects/ still exists => problem

So now we move repository and even if repository removal failed

Repository directory is moved so no bugs with project removed but
repository directory taken. User still able to create new project with
same name. From administrator perspective you can easily find stalled
repositories by searching `*+deleted.git`
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Remove "(unreleased)" from v 7.11.0

More Javascript testing

Continuation of !715

See merge request !736

Push event: Nest link in strong tag, not vice-versa

Closes #1022

See merge request !755

Fixes https://github.com/gitlabhq/gitlabhq/issues/9274

Also removes redundant `unbind` call

Removes redundant enableButton/disableButton extensions, and adds specs
for the jQuery extensions.

[ci skip]

Closes #1022

Don't notify users mentioned in code blocks or blockquotes.

cc @rspeicher

See merge request !753

Render Group and Project descriptions with our Markdown pipeline

Continuation of !727, this ensures external links in these fields also get `rel="nofollow"` added.

Bonus: Emoji now works in them! ✨

See merge request !735

And make it more generalized for all filter specs.