fix #84 false format url and add version
fix collection preview
fix #86 original image is replaced by image with same name
add logging
throw exception when it tries to overwrite exists file
fix #74 don't coupled tagmanger to api/media
fix #74 dont coupled tagmanager to api/media
remove tags when not set
fix #70 Inconsistent key usage in image formats parameter
fix #91 false file name for exception invalid mime type
Added on-delete cascade from file version to tags
fix #96 normalize segmentation folder length
Updated travis
changed minimum stability
Merge branch 'enhancement/96' into develop
Merge branch 'develop' into bugfix/cannot-delete-media-with-tags
Merge branch 'bugfix/cannot-delete-media-with-tags' into develop
Merge branch 'bugfix/91' into develop
Merge branch 'develop' into enhancement/70
Merge branch 'enhancement/70' into develop