Use stars icon on explore->starred page

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Make accept MR widget looks similar to panels

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Move "modify merge message link" to the right to prevent accidently hiting accept button

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Merge branch 'improve-mr-widgets' into 'master'

Improve MR widgets

Before:

![Screenshot 2014-10-14 17.49.03](https://dev.gitlab.org/uploads/dzaporozhets/gitlabhq/0283aa379e/Screenshot_2014-10-14_17.49.03.png)

After:

![Screenshot 2014-10-14 17.48.58](https://dev.gitlab.org/uploads/dzaporozhets/gitlabhq/ca9f2bae19/Screenshot_2014-10-14_17.48.58.png)

See merge request !1178
Merge branch 'fix-star-icon' into 'master'

Fix star icon

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/682.

See merge request !1180