Fixed recovery on file state in PreviewFragment on rotations
Fixed reinit of video preview on rotations from portrait to landscape (tablets only) ; removed unneeded reinit of second fragment
Modify strings: can not --> cannot, remove space before ?
Update file images, add new mimetypes to show: spreadsheets, impress, rar, rtf and 3gp
Merge branch 'develop' into release-1.5.6
Merge branch 'fixed_video_playback_on_rotations' into release-1.5.6
Remove unnecessary import in DisplayUtils
Add comments
Update library reference for release-1.5.6
Fixed typo in strings
Fix: App gets stuck when sharing a folder when there is a credential error
Update failed_upload_load_more_images string
Update version number to 1.5.6, 1.0.15(workaround)
Merge branch 'master' into develop
Merge branch 'develop' into pull_down_refresh