Additions to email threading

This MR follows !142:

* Add threading to "Merge request reopened" emails (see 310231db)

See merge request !145

Improve MR accept widget

* fixes UX problem with 2 confusing `click here` links.
* separate Accept MR block from manual merge instructions

See merge request !1014

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

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

Increase import timeout

Increase import timeout from 2 to 4 minutes. It allows repositories like `gitlabhq` be imported via UI

See merge request !1013

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

Improve dev seeds

See merge request !1012

* Improt projects inline so after seeds you have repos
* Fix merge request seeds
* Add comment seeds to both issues and merge requests
* Remove some projects from seeds to increase speed
Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

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

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

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

Fix encoding of output of markup, prevent 500 for non-ascii characters

#### What does this MR do?

This MR forces the output of `Github::markup` to have the same encoding as the input to it.

#### Why was this MR needed?

This prevents 500 errors if the markup contains non-asci characters.

#### What are the relevant issue numbers / Feature requests?

This MR closes

* #296
* https://github.com/gitlabhq/gitlabhq/issues/7023

/cc @jacobvosmaer

See merge request !160

Add retry option of travis and bundler

Turn if/else branch for valid compare error message

Improve readme markup,  fixes #7455

This reverts commit a5473561.
Because grit does not respect offset setting when follow: true which
cause invalid commit history for file

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

Fix 500 on searching on empty project, restyle search page

Prevent 500 if hook url is down when testing a hook, fixes #7376

history for files follows after rename

Disable 'Save changes' button if input is empty, fixes #6351

Use ruby 1.9 syntax

Merge branch 'add_complete_commit_message_to_api' of https://gitlab.com/christian.taedcke/gitlab-ce into christian.taedcke/gitlab-ce-add_complete_commit_message_to_api
Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Conflicts:
	CHANGELOG

Fix hound

Less chatty HipChat intergation

The HipChat integration is noisy. In our team it constantly overwhelms the channel with a lot of commits or the bodies of their messages. It's very easy to loose the actual conversation in the midst of this.

This request does two things:

* Limit the number of shown commits on every push
* Display only the first line (the subject) of each commit messages

We tried it and found it was nicer for us 😄

See merge request !159

Let users limit by archived/not archived projects in GitLab API GET /projects

Adds a boolean parameter, archived, to the /projects endpoint.

See merge request !158

Better formulated memory requirements

See merge request !1010

Sidekiq and ram

/cc @jacobvosmaer

See merge request !1011

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

Improve test env

* Replace big gitlabhq repo with small one (https://gitlab.com/gitlab-org/gitlab-test)
* dont stub gitlab-shell calls

Advantages:

* test gitlab-shell install during tests
* test integration with gitlab-shell features (fork, change default branch etc)
* don't store archive with test repo inside gitlab
* less stubs - easier to write/read tests

During this refactoring __next issues are be fixed__:

* satellite error if gitlab_shell path is relative
* project rename repo -> 500 error
* fixed wrong diff for MR `download plain diff`
* fixed bug when gfm ignores `@ref` variable during link parsing

Fixes #1451

See merge request !1005

Explain that sidekiq doesn't eat as much ram as some people seem to suspect https://twitter.com/khrogos/status/498062432938782720