markup_helper: detect .mkd and .mkdn as markdown

See merge request !1148

Move merge manually text below merge widget 

Replace !1121 

Screenshot: 

#### Before

![Screenshot_2015-08-10_18.25.22](https://gitlab.com/gitlab-org/gitlab-ce/uploads/ac7df8dd03104b3b44c61b3bff709653/Screenshot_2015-08-10_18.25.22.png)


#### After

![Screenshot_2015-08-10_18.28.30](https://gitlab.com/gitlab-org/gitlab-ce/uploads/c92b8eaeadb842705577dba1f52b67e5/Screenshot_2015-08-10_18.28.30.png)



See merge request !1141

Add merged label on branches page

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

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

Add "Check out branch" button to the MR page.

I appreciated the thought behind adding the "Fetch this branch using ..." line, but not so much the implementation. I think a "Check out branch" button alongside the existing "Download as" makes more sense to get instructions on how to get the changes on your local machine, since that's pretty much what "Download as" does as well. 

Like the "command line", the button opens the command line merge instructions modal. I've improved the text of that modal in !1120.

![Screen_Shot_2015-08-08_at_22.10.19](https://gitlab.com/gitlab-org/gitlab-ce/uploads/fd185df012e9759dfea198ed9fa3f80f/Screen_Shot_2015-08-08_at_22.10.19.png)

It looks even better in combination with !1121, which gets rid of the "If you want to ..." line:

![Screen_Shot_2015-08-08_at_22.10.55](https://gitlab.com/gitlab-org/gitlab-ce/uploads/3fa469d0e2bd4e3ec4992ffa5864c718/Screen_Shot_2015-08-08_at_22.10.55.png)

cc @dzaporozhets @rspeicher 

See merge request !1116

Improve merge request widget

Return merge request widget improvements that were reverted with satellites

See merge request !1140

Improve text of MR merge widget and manual merge modal

Modal with manual merge instructions:

![Screen_Shot_2015-08-08_at_21.30.23](https://gitlab.com/gitlab-org/gitlab-ce/uploads/2bffe42e9ad76afd02efbe5816027767/Screen_Shot_2015-08-08_at_21.30.23.png)

Archived:

![archived](https://gitlab.com/gitlab-org/gitlab-ce/uploads/e1efa1d54ce7ead8de6e88ca34095c09/archived.png)

WIP:

![wip](https://gitlab.com/gitlab-org/gitlab-ce/uploads/14a831458d0946722559ec643f91678c/wip.png)

Missing target branch:

![missing_branch](https://gitlab.com/gitlab-org/gitlab-ce/uploads/340083bbacbc234906e58cf76c586a9e/missing_branch.png)

Missing source branch:

![missing_branch_source](https://gitlab.com/gitlab-org/gitlab-ce/uploads/72f80ed58efed88b2bbcf403b55b1a01/missing_branch_source.png)

Nothing to merge:

![nothing](https://gitlab.com/gitlab-org/gitlab-ce/uploads/85b0d9da87acacd53cffd0df58d8eed4/nothing.png)

Checking ability to merge:

![check](https://gitlab.com/gitlab-org/gitlab-ce/uploads/32d75322e622025610c446e8ca7d892d/check.png)

Conflicts when allowed to merge:

![conflicts](https://gitlab.com/gitlab-org/gitlab-ce/uploads/23fdb2c60a27d873b3cc8a008203eb59/conflicts.png)

Conflicts when not allowed to merge:

![conflicts_not_allowed](https://gitlab.com/gitlab-org/gitlab-ce/uploads/113462a80fc65bf48b20dc0efd808363/conflicts_not_allowed.png)

Mergeable when allowed to merge:

![accept](https://gitlab.com/gitlab-org/gitlab-ce/uploads/1b3bb1a71df21728fe9318e7a083bfba/accept.png)

Mergeable when not allowed to merge:

![not_allowed](https://gitlab.com/gitlab-org/gitlab-ce/uploads/d38fa5c96f8f9d7223bb6bc7ad36f29d/not_allowed.png)

Merge in progress:

![locked](https://gitlab.com/gitlab-org/gitlab-ce/uploads/b60dcf5eb70e6032b0e8aac766018df3/locked.png)

Merge failed:

![failed_2](https://gitlab.com/gitlab-org/gitlab-ce/uploads/3713b9a10298183935b028b658271ac9/failed_2.png)

Merged:

![merged](https://gitlab.com/gitlab-org/gitlab-ce/uploads/7f68a48dd197a71351c9a80c59c8ecbe/merged.png)

Closed:

![closed](https://gitlab.com/gitlab-org/gitlab-ce/uploads/d5ce040449b7db943bd2fbfffb607a10/closed.png)

cc @dzaporozhets @rspeicher

See merge request !1120

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>

Bump Haml to 4.0.7 to speed up textarea rendering

The current regexp caused long load times when textarea blocks were surrounded by whitespace. This fix has been submitted to the Haml library and passes tests there:

https://github.com/haml/haml/pull/850

Closes #1987

See merge request !984

Fast blame

Improve performance for file blame page. Also bring some small UI improvements

See merge request !1129

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

Drop the user name from tree row to improve readability of commit messages

Follow up to MR !579

/cc @dzaporozhets

See merge request !1124

Link username to profile on Group Members page

When browsing a GitLab group, a user may want to view a particular user's
other contributions or profile information. This link helps make
that process seamless.

See merge request !1099

Revert satellites

Return satellites to master for 7.14

We remove satellites in next release (8.0)

See merge request !1136

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

This reverts commit 7bde6ae5.

This reverts commit 5a1aa49b, reversing
changes made to a675bea2.
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

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

This reverts commit 734a4ba8.
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

This reverts commit 27a15850.
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

This reverts commit 54113319.

This reverts commit 3d416f16.

This reverts commit 435f680b.

This reverts commit dfccb06d.
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>

This reverts commit d24c40ec.

This reverts commit 459e6d34, reversing
changes made to 804168e1.
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

This reverts commit 957e849f, reversing
changes made to 6b9dbe9f.
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

This reverts commit 4773f38e, reversing
changes made to 0d5d80b7.

This reverts commit 151d9fb3, reversing
changes made to 819d110c.

Fix broken code import and display error messages if something went wrong with creating project

Clicking "Import" in Bitbucket import status page would result in:

```
  Rendered import/base/create.js.haml (38.3ms)
Completed 500 Internal Server Error in 1362ms (ActiveRecord: 20.2ms)

NoMethodError - undefined method `namespace_projects_path' for #<#<Class:0x007fd6c0f29498>:0x007fd6c0cf09d8>:
  actionpack (4.1.11) lib/action_dispatch/routing/polymorphic_routes.rb:142:in `polymorphic_url'
  actionpack (4.1.11) lib/action_dispatch/routing/polymorphic_routes.rb:148:in `polymorphic_path'
  actionview (4.1.11) lib/action_view/routing_url_for.rb:87:in `url_for'
  turbolinks (2.5.3) lib/turbolinks/xhr_url_for.rb:12:in `url_for_with_xhr_referer'
  actionview (4.1.11) lib/action_view/helpers/url_helper.rb:181:in `link_to'
  app/views/import/base/create.js.haml:23:in `_app_views_import_base_create_js_haml__1092746368522631377_70280180507700'
  actionview (4.1.11) lib/action_view/template.rb:145:in `block in render'
  activesupport (4.1.11) lib/active_support/notifications.rb:161:in `instrument'
  actionview (4.1.11) lib/action_view/template.rb:339:in `instrument'
  actionview (4.1.11) lib/action_view/template.rb:143:in `render'
  rack-mini-profiler (0.9.0) lib/mini_profiler/profiling_methods.rb:108:in `block in profile_method'
  actionview (4.1.11) lib/action_view/renderer/template_renderer.rb:55:in `block (2 levels) in render_template'
  actionview (4.1.11) lib/action_view/renderer/abstract_renderer.rb:38:in `block in instrument'
  activesupport (4.1.11) lib/active_support/notifications.rb:159:in `block in instrument'
  activesupport (4.1.11) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
  activesupport (4.1.11) lib/active_support/notifications.rb:159:in `instrument'
```

Also, if the project failed to save for some reason, the user was never informed. Screenshot of new error message dump:

![image](https://gitlab.com/stanhu/gitlab-ce/uploads/afc15aa6b0cde0080976eab3199cf18b/image.png)

Closes #2241

See merge request !1134