unify ignore and hide #bugmash #monday

fixes [#3828](https://github.com/diaspora/diaspora/issues/3828)
![pr-hide](https://f.cloud.github.com/assets/3798614/634693/f67a585e-d221-11e2-9085-a788d1ac840e.png)
![pr-ignore](https://f.cloud.github.com/assets/3798614/634694/f67f48b4-d221-11e2-994d-6c6d6b46b1b7.png)