get the multi filter labels feature to work on merge request, also escape characters in the templates to prevent xss attack

This ensures that IssuableFinder returns a collection of unique issues,
even when filtering issues using multiple labels.

Redis configuration consistency

Related https://gitlab.com/gitlab-org/gitlab-ce/commit/cf669551f69edd66913d22c96cf1de1302e7990e

See merge request !3697

Hide top search form on the search page

Closes #14771

![Screen_Shot_2016-04-11_at_6.04.19_PM](/uploads/44cf2110bad29c0df06d874740a3a61f/Screen_Shot_2016-04-11_at_6.04.19_PM.png)

See merge request !3668

Set tooltips for new added labels

Fixes #15093 

![Screen_Shot_2016-04-11_at_5.50.21_PM](/uploads/52d06f6ccb3ca42e7ce75b94111514c2/Screen_Shot_2016-04-11_at_5.50.21_PM.png)

See merge request !3667

Update delete button

Closes #14762 

![Screen_Shot_2016-04-11_at_5.21.32_PM](/uploads/fef09645eb70fc0fcaee359245664ddc/Screen_Shot_2016-04-11_at_5.21.32_PM.png)

See merge request !3665

Fixed alignment on issuable new form

Fixes #13802

![Screen_Shot_2016-04-11_at_17.03.29](/uploads/d359580e693284d4b694d8158d4f736e/Screen_Shot_2016-04-11_at_17.03.29.png)

See merge request !3661

Updated InfluxDB/Grafana setup/import docs

See https://gitlab.com/gitlab-org/grafana-dashboards/merge_requests/1 for some background info.

cc @dblessing 

See merge request !3706

Clean up ExclusiveLease

See merge request !3695

Fix a bug with trailing slash in bamboo_url

Also, improve specs for BambooService

Similar to !3679.

See merge request !3680

Fix trailing slash in teamcity_url

Originally opened at !2309 by @ctmay4.

As described in #3515, if you have trailing spaces in the the Teamcity server name, the service
will not work properly.  Switching from `URI.parse` to `URI.join` fixes it so that it works with
or without a trailing slash.

Fixes #3515.

See merge request !3679

Load related MRs/branches asynchronously

cc @dzaporozhets 

See merge request !3678

Make milestone labels in labels tab similar to that of the labels page

I realized that some of the changes for the labels page was not reflecting in the labels list in milestone page.

## Desktop
![Screen_Shot_2016-04-11_at_4.25.36_PM](/uploads/e21f3c5a9187fe32472e796171781b5d/Screen_Shot_2016-04-11_at_4.25.36_PM.png)

## Mobile
![Screen_Shot_2016-04-11_at_4.26.47_PM](/uploads/5c9f75ca0938fc30ab47c5520215f692/Screen_Shot_2016-04-11_at_4.26.47_PM.png)


See merge request !3658

API: Subscribe and unsubscribe from issues and merge requests

* Closes #6024 

This MR is based on !3611, which must be merged first.


See merge request !3615

The grafana-dashboards repository now contains _all_ GitLab.com
dashboards and thus requires some extra continuous queries to be set up.
The repository now also provided a way to automatically import/export
dashboards.

[ci skip]

Fix high CPU usage when PostReceive receives refs/merge-requests/<id>

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/12661


See merge request !3651

Currently this works by loading the HAML partials via XHR. While this is
not the nicest setup it _is_ the easiest setup using the tools we
currently have.

Loading this data asynchronously doesn't make loading the related
MRs/branches itself faster, it merely ensures that loading the issue
itself is not slowed down.

Fixes gitlab-org/gitlab-ce#14949

API: Star and unstar a project

Add two new endpoints `POST /projects/:id/star` and `POST /projects/:id/unstar` to star and unstar a project.

* Closes #12739


See merge request !3578

Fix bug causing comment form in issue to submit twice when CTRL+Enter is pressed twice



See merge request !3655

Remove Bootstrap Carousel

The Bootstrap carousel module is used for image carousels, and we don't
use it anywhere on the site.

Fixes #14670.

See merge request !3624