Translation update (id)

Translation update (cs)

Update action.php

fix bug that only allows admins any AJAX calls

Translation update (tr)

Translation update (fr)

Translation update (sk)

this should help with applying pull requests that do come not from the
translation interface as it makes sure the files will be at least
syntactically correct.

our translation interface used to submit empty files for a while but no
longer does, so these can go

Translation update (pl)

Translation update (el)

Translation update (pl)

remove some code duplication from syntax plugins

AUTH_ACL_CHECK event around ACL checking

dokuwiki template: Fix the preview width on small screens FS#2914

Resize image by height

* extension_manager: (71 commits)
  added plugins group to test
  show a message when search returns no results
  added missing localization
  better filename parsing
  use DOKU_LF
  remove unneeded try/catch blocks
  typo fix
  purge cache only once on install
  check for admin in AJAX backend
  now use new core funtion to recursively delete
  added status to info list of extension plugin
  added css and html changes for RTL scripts to extension manager
  added basic mobile styles to extension manager (not great, but makes things at least readable)
  fixed and improved some HTML in extension manager
  added git warning
  fixed strict standard error and added some docblock
  removed the old plugin manager
  typo fix
  protect authplain and current auth plugin
  do not show updates for bundled plugins
  ...

Conflicts:
	lib/plugins/plugin/lang/hu/admin_plugin.txt
	lib/plugins/plugin/lang/hu/lang.php

Recursive delete function 

Translation update (ru)

Translation update (hu)

Translation update (fa)

Corrections in Romanian language files