Merge branch 'group_names_widget' into 'master'

Project names are not fully shown if group name is too big, even on group page view

https://dev.gitlab.org/gitlab/gitlabhq/issues/2548


![joxi_screenshot_1444408109183](https://gitlab.com/gitlab-org/gitlab-ce/uploads/c21ae245254b82db0212298b6f997067/joxi_screenshot_1444408109183.png)


See merge request !1561