Prevent directory listings

Fixes #339.

Filtered due to lack of support in MySQL < 5.5.3.

Add PHP 7, simpler tool installs, remove junk.

Fixes #327.

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 

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

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

Add theme option to use Google Fonts.

updated the ReCaptcha and fixed the issue with allow_url_fopen
dependency