Having a merge request with a comments on a line which is then changed
in a later commit prevented new comments from properly showing up in the
merge request show page.
* `Note#set_diff` do not use stored the diff when creating a new note
in merge requests (we can not be sure the diff did not changed since
the last comment on that line)
* Do not rely just on `outdated?` of the first note when displaying
comments of a MR in the discussion tab, but partition the
active/outdated notes and display them all
* In the inline changes tab just select the active notes, so an
outdated note does not prevent an active one from being rendered
* Just show active comments in the side-by-side changes tab
Dominik Sander
d4fec49abc