Fixes #315.

Display in browser if possible, set filename for download.

Added webkit vendor prefix.
Shortened the animation length slightly.
Removed highlight from Candy theme due to image background.

Correct URL after posting a comment to the question 

This fix checks for the question url . If it does not match with the
current URL then redirect to the correct one

Prevent long handle stretching user menu (adds ellipsis).
Remove handle when avatar is present, but keep handle when no avatar.

Use jQuery to simplify.

Remove code duplication.
Close #273.

After posting a comment to a question the comment anchor is wrong . This
commit fixes this issue with the correct anchor

Fixed reCAPTCHA dependency on allow_url_fopen configuration