Added gitorious.org importer

Heavily inspired by GitHub and GitLab importers.

See merge request !343

Improve web hooks

* add git_http_url and git_ssh_url to project web hook
* add visibility_level to project web hook
* add documentation about project visibility_level in API

Fixes #2018, #2030

cc @sytse

See merge request !1560

* add git_http_url and git_ssh_url to project web hook
* add visibility_level to project web hook
* add documentation about project visibility_level in API

Base new MR title on commit title if there's only one.

Closes #2029.

See merge request !1558

Fix commits calendar vertical days.

Fixes #2031.

Before:

![Screen Shot 2015-02-20 at 14.36.31](https://dev.gitlab.org/uploads/gitlab/gitlabhq/08d322797b/Screen_Shot_2015-02-20_at_14.36.31.png)

After:

![Screen Shot 2015-02-20 at 14.35.54](https://dev.gitlab.org/uploads/gitlab/gitlabhq/0cfbabad26/Screen_Shot_2015-02-20_at_14.35.54.png)

See merge request !1555

Update CHANGELOG

Add myself to the changelog for the Asana service #8580

UI improvements

* lighter color for comments count
* better UI for issue assigee.milestone block

See merge request !1551

* lighter color for comments count
* better UI for issue assigee.milestone block

Ui improvements

* improve UI for commits, issues and merge requests lists
* refactor commit css

See merge request !1550

Ui improvements

* update bootstrap
* move milestones and labels to the left
* make open/closed/all filter as tab
* make issues page more compact

For  #1871

See merge request !1549

Correctly set default projects limit for new users.

See #2014.

Note that the projects limit still isn't retroactively applied to existing users (probably as intended)

See merge request !1547

Add missing color codes for line anchors, fixes #8628

Document fun facts about omnibus-gitlab

I hope this helps developers understand some of the differences.

See merge request !1546