[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
[feature/plupload/deps] Adding parts of plupload_1_5_7.zip

PHPBB3-10929
[feature/plupload/deps] Add information about Plupload to AUTHORS.

PHPBB3-10929
[ticket/11345] Don't include scheme, so HTTPS is used where necessary.

PHPBB3-11345
[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
Merge branch 'develop' of git://github.com/phpbb/phpbb3 into ticket/11786
[ticket/11786] Fix indentation in the PHPDoc of core.group_delete_user_before

The core.group_delete_user_before event had bad indentation in its PHPDoc.
Fixed.

PHPBB3-11786
[ticket/11871] Allow backslash in classnames for Modules

PHPBB3-11871
[task/composer-compatibility] Minor changes that will break extension BC

PHPBB3-11840
[ticket/11840] Fix regex

PHPBB3-11840
[ticket/11840] Use generic information in the test extension

Not sure why I had my name/info in these files...

PHPBB3-11840
[ticket/11840] Correct Moo test extension composer

PHPBB3-11840
[ticket/11877] Create package links and checksums for announcement via script.

PHPBB3-11877