* master: (103 commits)
  Add a basic test case for the cache
  Events: Trigger a warning if the default action is not callable
  Fix caching (make the event callback public again)
  translation update
  translation update
  translation update
  translation update
  translation update
  translation update
  translation update
  avoid HTTP image screenshot urls. closes #595
  translation update
  Extension manager: Fix cache extension to be .repo
  adjusted the office type color again
  another instance of empty() where an array key might not exist
  remove placeholder van denied.txt
  updated file icons once more
  removed 'not logged in' text, loginform is shown already
  Revert "added stripped bit to language file"
  fixed index file
  ...

Conflicts:
	inc/html.php

Improve denied access text  FS#2124

Merge branch 'lang_update_119' of git://github.com/dokuwiki-translate/dokuwiki into pull-request-605

* 'lang_update_119' of git://github.com/dokuwiki-translate/dokuwiki:
  translation update

Conflicts:
	lib/plugins/acl/lang/et/lang.php

Switched file icons against generated ones, added 32x32 versions

Events: Trigger a warning if the default action is not callable

Merge branch 'lang_update_123' of git://github.com/dokuwiki-translate/dokuwiki into pull-request-611

* 'lang_update_123' of git://github.com/dokuwiki-translate/dokuwiki:
  translation update

Conflicts:
	lib/plugins/acl/lang/et/lang.php

Translation update (et)

This very basic test ensures that the useCache method works as
expected for simple scenarios. This test case fails without commit
a8795974 and then also triggers the
warning that was introduced in bc2ddb54

This adds a warning in the case that the default action is not null but
also not callable which can happen when the supplied method is not
public.

Caching had been completely broken (disabled) for caches with events
because the default event handler (cache::_useCache()) was protected and
thus couldn't be executed by the event handler. This was broken in
c59b3e00

Translation update (ru)

Translation update (ru)

Merge branch 'lang_update_102' of git://github.com/dokuwiki-translate/dokuwiki into pull-request-599

* 'lang_update_102' of git://github.com/dokuwiki-translate/dokuwiki:
  translation update

Conflicts:
	inc/lang/et/lang.php

Translation update (et)

Purge error log messages to support use of E_ALL

Translation update (de)

Translation update (ru)

The dot was missing i.e. the cache files had no real extension at all.

adjusted some colors, added a few common extensions for codeblocks

This reverts commit 524df576.

Conflicts:
	inc/lang/bn/lang.php
	inc/lang/fr/lang.php

for backwards compatibility