* master: (152 commits)
  updated jquery to 2.2.4
  fixed interwiki test
  simplified amazon interwiki links. closes #1588
  minor optimization how cell counts are fixed in tables
  Beautify code
  Keep query params during redirect to headpage
  Add sleep(1) to remoteapicore to ensure new other timestap(=rev nr)
  take care of file size change of zero
  refactor duplicate sizechange code into its own function
  always separate a number and a unit by a non-breaking space
  fix an unfortunate line break in one of the tabs of the mediamanager when using Arabic
  added doku_hasTextBeenModified, rename doku_checkSummary
  shortening dokucookie option names for extension manager
  Fix xmlrpc constructor for php7
  translation update
  translation update
  translation update
  add phpdocs
  remote api ackcheck: if user given, but no groups, retrieve groups
  use variable in remoteapicore_test
  ...

upgraded jQuery to 2.2.3

Check if content really changed in the Editor, before popup a warning…

array splice operations are expensive. when many cells in a table row
are missing, the operation should be executed only once instead for each
missing cell.

Invalidate user session cache after profile data was changed (fix #1117)

Keep query params during redirect to headpage

Small fixes for file size changes

As discussed in Issue #1454 dokuwiki currently "forgets" additional
queryparams when redirecting from devel: to devel:start

Example:
https://www.dokuwiki.org/devel:?foo=bar
should result in
https://www.dokuwiki.org/devel:start?foo=bar
but actually results in
https://www.dokuwiki.org/devel:start

This commit fixes that behaviour.

Fixes #1454

Could improve failing test of #1589

Merge branch 'lang_update_18' of https://github.com/dokuwiki-translate/dokuwiki into dokuwiki-translate-lang_update_18

Conflicts:
	lib/plugins/authplain/lang/hr/lang.php
	lib/plugins/config/lang/hr/lang.php

Remoteapi getversions

Keep filter options in the extension manager

inline small images into the CSS by default

Improve RTL (Right-to-left) behaviour in media manager

Conflicts:
	lib/exe/xmlrpc.php

checkfunc is mainly replaced by doku_hasTextBeenModified, which is put
in  global scope to allow overriding by plugins.

Adding listAcls to the XMLRPC API 

Fix xmlrpc constructor for php7

In php7 constructors with the same name as the class are deprecated. __construct() should be used.

Depending on the server-configuration this could result in a warning which would break the API.

Translation update (hr)

let js.php also use the configcascade for localized translation

Make select-options in Form more configurable

Added getter function getLastlevel() in Doku_Renderer_xhtml.

Translation update (fi)