Add autocomplete in comment text areas for '@' mentions, similar to GitHub, Twitter, etc.

[rjsamson]

This commit adds autocomplete when adding an '@' mention in a comment using jquery ui autocomplete and a custom triggerAutocomplete plugin. The autocomplete is triggered by the '@' and does not interfere with other normal use of the '@', for example if entering an email address. The following screenshot shows how this looks as implemented:

[pjutard]

You can try this: https://github.com/tactivos/jquery-sew

[pjutard]

You can try this: https://github.com/tactivos/jquery-sew

[rjsamson]

@pjutard that looks pretty interesting - might be worth taking a look at. I'm not entirely sure if this is a feature that @jcs is interested in merging though - if it is, it might be worth trying out though.

[rjsamson]

@pjutard that looks pretty interesting - might be worth taking a look at. I'm not entirely sure if this is a feature that @jcs is interested in merging though - if it is, it might be worth trying out though.

[jcs]

I haven't really decided one way or the other, which is why I've left this open. I can see the utility in it, but I am hesitant to add lots of cruft (i.e., JavaScript) to the interface.

[jcs]

I haven't really decided one way or the other, which is why I've left this open. I can see the utility in it, but I am hesitant to add lots of cruft (i.e., JavaScript) to the interface.