Spread out runner contacted_at updates

This is meant to prevent having too many concurrent UPDATE requests
caused by runners checking in.

See merge request !1722

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

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

Fix clipboard button overflow
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

See merge request !1739

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

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

Cleanup stuck CI builds

Fixes #3143

/cc @dzaporozhets @jacobvosmaer 

See merge request !1655

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

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

Extend yml syntax for only and except to support specifying repository path

This allows to limit execution of jobs to specific repository.

For example:
```yaml
job:
  only:
    - branches@gitlab-org/gitlab-ce
  except:
    - master@gitlab-org/gitlab-ce
```

The above will run `job` for all branches on `gitlab-org/gitlab-ce`, except master.

@dzaporozhets @JobV @vsizov Please review.


See merge request !1720

Remove inflector rule that makes commits uncountable
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Before: 

```
>> "commits".singularize
=> "commits"
>> "commit".pluralize
=> “commits”
```

After: 

```
>> "commits".singularize
=> "commit"
>> "commit".pluralize
=> “commits”
```

cc @rspeicher 

See merge request !1726

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

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

Add 'New file' link to dropdown on project page
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Screenshot: 

![Screenshot_2015-11-02_15.33.41](/uploads/ecc87c6bda9e3f0680e5422d5cdc08f9/Screenshot_2015-11-02_15.33.41.png)


Fixes internal issue https://dev.gitlab.org/gitlab/gitlabhq/issues/2562

See merge request !1719

Update links in CI docs after GitLab 8.1

Fix that some links to CI status in docs were broken even after following redirects.

As CI build overview is now missing (cf. #3008), this MR uses `?scope=all` parameter.

See merge request !1733

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

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

Explicitly require backup/files

Fixes a test failure we were seeing on CI after merging !1520

See merge request !1731

Fix deprecated `prepend_before_filter` -> `prepend_before_action`

Add ability to fetch the commit ID of the last commit that actually touched a file

https://dev.gitlab.org/gitlab/gitlabhq/issues/2564

See merge request !1718

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