First steps for sharing files
Add basic sharing
Store attachments in DB
Add msg to conversation to inform about attached file
Solve conflict
Add table with all attachments
Small style fixes
Make it possible to remove/unshare files
Style fixes
Add text to log
Load chat msgs with files on int()
Don't use OC translations
Send msg when file is removed
Add correct entity types
Make it impossible for not owners to remove a file
Add download link for files
Inform user with tipsy about download + keep showing popover
Preview image files
merge file_attach