Don't display "git clone --bare <URL>" if no URL is available

Make it clear that forking is different than importing. Forked repositories don't use `import_url`, so only display if is available. Introduced in !1231

Before:

![image](https://gitlab.com/stanhu/gitlab-ce/uploads/d8456334a2a9187b56a885f8849f229e/image.png)

After:

![image](https://gitlab.com/gitlab-org/gitlab-ce/uploads/9823e8a2baf02859c4c3f05f3a5c35bf/image.png)

See merge request !1295

Update gitlab_emoji to 0.1.1

See merge request !1290

Introduced in !1231

Improve UI for last push widget and web editor

See merge request !1296

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

Improve project settings button on profile

Rename `Edit profile settings` to `profile settings` button
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

See merge request !1932

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

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

add "replace" and "upload" functionality

    Refactor upload and replace functionality

    Rename file and move CSS

    Fix typo

    Make dropzone a div

    Remove unnecessary file

    Change color of "upload existing one"

    Add missing changes

Add page titles to header for group and project
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Fixes https://dev.gitlab.org/gitlab/gitlabhq/issues/2586

See merge request !1293

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>

Make all group public

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/1219#

Internal issue - https://dev.gitlab.org/gitlab/gitlabhq/issues/1361

See merge request !1247

Import forked repositories asynchronously to prevent large repositories from timing out

Preserve synchronous mode of adding a repository since some tasks (e.g. restore/check) require the former.

One side bug fix is that the `ProjectCacheWorker` is also run, updating the repository size and commit numbers properly. Previously all the values were set to 0 when a project were forked.

* Closes #2388
* Closes #2400

See merge request !1231

Fix tooltip display in list views

After the recent UI changes the tooltips in a list view rendered behind the next object. This resets the tooltip's container to the body, rather than the individual `issue-info` div. In particular, this change will be applied to *all* tooltips in GitLab. This should take care of any other unidentified issues like this and should not have any negative effects that I can think of. This fixes the bug I noted in !1255.

**Current:**

![Screen_Shot_2015-09-14_at_8.45.34_AM](https://gitlab.com/dblessing/gitlab-ce/uploads/5fc6343f2e440dd10d01dfa595835e6a/Screen_Shot_2015-09-14_at_8.45.34_AM.png)

**As proposed:**

![Screen_Shot_2015-09-14_at_8.44.35_AM](https://gitlab.com/dblessing/gitlab-ce/uploads/7ffce7ce7523514bf7bb43d6380eb1d1/Screen_Shot_2015-09-14_at_8.44.35_AM.png)

See merge request !1288

Keep add-diff-note button the same size on hover. Fixes #2497

Removes the overridden `font-size` and `width` so the button inherits size on hover. See #2497 for screenshots of prior behavior.

See merge request !1285

Add LATEST_TAG variable to automatically fetch the latest tag

Add LATEST_TAG variable to automatically fetch the latest tag

Replaces !1241

See merge request !1287

added note about Issues stored in the database

Because of tweet https://twitter.com/galstar/status/637981324117020672


See merge request !1930

Improve english of error message

See merge request !1284

Clean up overlap between dashboard and explore

- Clean up overlap between dashboard and explore. ... 5d785457
  - Split up SnippetsController into separate dashboard and explore sections.
  - Use consistent page titles, header titles and sidebars between dashboard and explore sections when signed in or not.
- Consistently case `Back to X` links. 260fcd45
- Link to help from signin page bottom. d92696d3
- Make Help accessible for guests. c258e977

cc @dzaporozhets

See merge request !1260

Syntax highlighting improvements

On the server side:

During development I would occasionally see SanitizationFilter sanitizing
the result of SyntaxHighlightFilter, even though its attributes were
whitelisted. This updates the `clean_spans` transformer to return the
whitelisted node as [suggested by the Sanitize docs](http://git.io/vZR8i).

On the client side:

- Makes the syntax_highlight JS more flexible
- Adds JS specs
- Simplifies highlighting of new notes
- Adds highlighting to Markdown preview

See merge request !1278

Use import_status to track async import status and give feedback to the user

Closes #2388
Closes #2400