At first thanks for your app! Seems to be a good first step to collaborate with other users.
I've tested it for a few minutes and recognized that the "commentsdropdown" hides to save every time.
In my opinion it is a smoother solution to leave the "commentsdropdown" visible and update only the "commentsinput".
A later feature could be also a delete option for a defined comment.
FYI everyone -
if you install 3rd party/downloaded to a directory such as apps2/ (as is recommended!) some of the files depend on the apps/ directory and will therefore break your owncloud instance.
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