[ticket/11606] remove preg_replace() /e modifier in make_clickable()

PHPBB3-11606
[ticket/11700] With namespaces interface will no longer be a valid classname

PHPBB3-11700
[ticket/11700] Modify all code to use the new interface names

PHPBB3-11700
[ticket/11700] Implement namespace loading in the class loader

PHPBB3-11700
[ticket/11700] Instantiate the class loader with namespace rather than prefix

PHPBB3-11700
[ticket/11345] Change font for buttons

Change font to Open Sans

PHPBB3-11345
[ticket/11345] Add Droid Sans as fallback font

PHPBB3-11345
[ticket/11345] Move css import to template

PHPBB3-11345
[ticket/11345] Wrap remote webfonts in S_ALLOW_CDN.

PHPBB3-11345
[ticket/11700] include and define are not valid class names

PHPBB3-11700
[ticket/11700] Load namespaced classes in tests

PHPBB3-11700
[ticket/11700] Use a new style constructor for the error collector

PHPBB3-11700
[ticket/11700] Load the dbms with namespaces

PHPBB3-11700
[ticket/11345] Don't include scheme, so HTTPS is used where necessary.

PHPBB3-11345
[ticket/11373] Prune old read notifications with cron

PHPBB3-11373
[ticket/11786] Fix typo and ugly English in the notification system PHPDoc

The notification system contained two PHPDoc lines that needed improvement.

PHPBB3-11786
[ticket/11786] Fix PHPDoc documentation of a few events

Fixed some PHPDoc errors I noticed while working on the karma extension.
Mostly spacing issues or omitted characters, though there was one description
that made no sense at all.

PHPBB3-11786
[ticket/11786] s/@return void/@return null in content_visibility.php

The file phpbb/content_visibility.php still contained a few instances of
'@return void' in its PHPDoc blocks, fixed. Thanks to JoshyPHP for reporting.

PHPBB3-11786
[ticket/11786] Further improve wording in phpbb/notification/type/quote.php

Further improve wording in phpbb/notification/type/quote.php per suggestion of
imkingdavid.

PHPBB3-11786
[ticket/11621] Remove mysql extra indexes

Remove post_text index as post_content index is sufficient to search post
text.

PHPBB3-11621