[ticket/11899] Give indication of activity after voting in poll.

PHPBB3-11899
[ticket/11935] Fix <p> tags not allowed inside <strong> tags

PHPBB3-11935
[ticket/11935] Fix incorrect alt tags that should be title tags

PHPBB3-11935
[ticket/11935] Fix stray </a> tags

PHPBB3-11935
[ticket/11935] Fix invalid HTML usage of <label> tag in prosilver

PHPBB3-11935
[ticket/11935] Remove obsolete table attributes from Prosilver

cellpadding, cellspacing, border are obsolete table attributes.
They are handled by CSS already using table and .table1

PHPBB3-11935
[ticket/11935] Replace obsolete table attributes in Admin with CSS

PHPBB3-11935
[ticket/11935] Tweak colour swatch table

PHPBB3-11935
Merge branch 'develop' into ticket/11935
[ticket/11914] Use unix line endings in plupload queue css file

PHPBB3-11914
[ticket/11914] Update plupload to 2.0.0

There are no longer seperate javascript files for each type of uploader.
New filenames have been kept as used inside the plupload package.

PHPBB3-11914
[ticket/11912] Integrate mimetype guesser with plupload

PHPBB3-11912
[ticket/11912] Add phpbb mimetype guesser

Mimetype guesser will be used as front-end file for mimetype guessing.

PHPBB3-11912
[ticket/11912] Add tests for phpbb mimetype guesser

PHPBB3-11912
[ticket/11912] Add content_guesser

The content_guesser will try to use the function mime_content_type()
if it's available. If that is not the case, the content_guesser will try to
guess the mimetype using the file extension of the supplied file.
Since this guesser will be registered after the other guessers, it will
be only used if the other guessers are not available.

PHPBB3-11912
[ticket/11912] Add tests for content_guesser

PHPBB3-11912
[ticket/11912] Improve extension map in content_guesser

PHPBB3-11912
[ŧicket/11912] Get rid of obsolete variables in content_guesser

PHPBB3-11912
[ticket/11912] Remove typo in content_guesser

PHPBB3-11912
[ticket/11912] Supply filename to content_guesser for guessing on windows

The filename of the files sent to the guesser by plupload do not contain
the file extension. Therefore, it's impossible to guess the mimetype if
only the content_guesser is available and the function mime_content_type()
doesn't exist. By supplying the filename we can circumvent this issue.

PHPBB3-11912