[Documentation] simplify HTTPS setup details

add optional nginx configs to make more secure

add cleanup section to 5.0 upgrade guide

Add cleanup details to upgrade guide as gitolite and more is no longer
used

Name it centos

See merge request !1060

add current sign-in date

also adds comment about updating nginx files during upgrades

Prevent graph spacing issue

Switch from travis to semaphoreapp

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>

Added cmake and pkg-config as build dependency for pkgr

Add comment to merge request when new push happens

Fixes #1494

See merge request !1065

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

It allows track when user added new commits to existing merge request
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

added htmlsafe to branch list

change git to git bin path

Delete mailer queue

Show labels help message if last label is deleted

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>

Annotated tags

Added annotated tags.  Updated tag haml file and call to gitlab-shell.  Updated API for annotated tags.  Added tests for API.  Strip leading/trailing whitespace from message, if present.  Update CHANGELOG.

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

Fix missing to on reassign Merge Request text email to unassigned.

Factor new issue and edit MR forms.

API: Filter issues by labels

While working on [laboard](https://gitlab.com/jubianchi/laboard) I had some issues with the API : I was not able to filter issues by labels so I had to write some logic to do it on my side.

I think it will be useful to have this feature supported by the Gitlab API.

I added the filtering logic on `/issues` and `/projects/:id/issues`.

The commits are not squashed but I'll do it once everything seems ok to you.

See merge request !169

Validate branch/tag-names and references WebUI, API

Fix missing to on reassign Merge Request email to unassigned.

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

Conflicts:
	CHANGELOG