446 linkify username in comment

[relativityboy]

#446

Author name is now always a link. Default browser behavior on the links is canceled unless or keys are pressed while clicking. A toggle event for the popup is fired if those keys are not pressed.

there is a bug

[sneak]

There is a history bug.

Steps to reproduce:

1. Open link to article page

2. Click username to show popup

3. click username in popup to go to blog page

4. hit back

expected:

return to post page

actual:

nothing happens

(this is not in relation to the issue i filed with middle-clicking to make a new tab; just on the single, original tab.)

[relativityboy]

@sneak there was a bug with addEventListener and removeEventListener not always being present. Added checks; that's fixed most of the "back" navigation problem.

[roadscape]

Tested, working well. The only potential UI issue I see is that the author name is now underlined on hover -- I don't believe condenser uses any underlined links, hover or not.

[relativityboy]

@roadscape - there's variation in links. Some are underlined, some are not. I've added a bit of styling to remove the underline for these.