Support commenting on a diff in side-by-side view ### What does this MR do? This MR adds support for commenting on a diff in side-by-side (aka parallel) view. It also fixes a JavaScript bug (see !779) when the comment button is clicked on a line that already has a comment. There is an existing bug where the comment count is not updated when a new comment is added. I'll send a MR for that later. ### Why was this MR needed? Commenting only worked in "inline" mode. Often the side-by-side view is more conducive to writing comments. ### What are the relevant issue numbers? Closes https://github.com/gitlabhq/gitlabhq/issues/9283 ### Screenshot  See merge request !810 |
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| admin | ||
| dashboard | ||
| explore | ||
| profile | ||
| project | ||
| snippets | ||
| steps | ||
| support | ||
| groups.feature | ||
| invites.feature | ||
| search.feature | ||
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| user.feature | ||