Merge pull request #118 from doronlinder/master

Autofocus on username only for returning users #117
Added delete button to comments for moderators #119
Tweaked hot articles algorithm
Added IP based limit on new accounts
Fixed bug stopping consecutive days reverting to 0
Added IP based limit on new accounts
Changed cookie variables for httponly and secure domains
Used php ini to set secure, httponly cookies
Added topic to forum notification email subjects #121
Added minimal call to app class in send_emails
Added mention and reply subjects for forum email notifications
Swapped the forum notifcation email subjects the right way round
Added h3 tag to nbbc
Added h3 to article TOC
Added h3 to article TOC
Added h3 to article TOC
Added h3 to article TOC
Tweaked H3 styles in articles
Tweaked H3 styles in articles
Fixed privacy sentence [sabretooth]