Maintain tests with new architecture. Better separate test classes

[loicortola]

• [x] Bundle Create
• [x] Bundle Find
• [x] Bundle Update
• [x] Bundle Delete
• [x] Revision Find
• [x] Media Create
• [x] Media Update
• [x] Media Find
• [x] Media Delete
• [x] Security Test

[loicortola]

TODO: Tests for RevisionController ... Yeah I know... Otherwise, good job for the other tests! nicely done.