added support for external video and audio files, also added return param to externalmedia()
fixed scrutinizer issues
Last Update Date info of extension fix

This request makes "Your last update" of the extension info shown when
clicking more info triangle mark. The first installed date of the
extension may not be necessary for local site admin work.
added filter method to INPUT class

the filter() function can be chained between the accessor and the value
function to get a filtered value. When no filter allable is given in the
filter() function, stripctl() is used to strip all control chars (ASCII<32)

Examples:

  $INPUT->post->filter()->str('foobar');
  $INPUT->get->filter('myfilter')->int('baz');
clean user credentials from control chars

This is to prevent zero byte attacks on external auth systems as
described in
http://www.freelists.org/post/dokuwiki/Fwd-Dokuwiki-maybe-security-issue-Null-byte-poisoning-in-LDAP-authentication
do not allow empty passwords

When a username but no password is submitted, the login is denied right
away instead of relying on the backend to refuse the login.
fixed typos in docblock comments
translation update
Merge pull request #870 from dokuwiki-translate/lang_update_46

Translation update (zh)
Merge pull request #828 from ssahara/extension-make_info

Last Update Date info of extension fix
Merge pull request #868 from splitbrain/authclean

clean user credentials from control chars
Merge pull request #869 from splitbrain/filter

added filter method to INPUT class
Merge pull request #826 from splitbrain/external-video-audio

Added support for external video and audio files