move class DokuHTTPClient behind HTTPClient

2 different people reported errors that seems to be solved when following the "If a class extends another, then the parent class must be declared before the child class structure." of http://php.net/manual/en/language.oop5.inheritance.php
Couldn't exactly reproduce under which php/environment the problem occurs, but following the MUST of the PHP documentation seems not to be wrong..

https://github.com/Flyspray/flyspray/pull/647

Translation update (zh)

remove deprecated method call from html_login

feat: add optionally an SVG to html_btn

Translation update (eo)

To prevent abusing this functionality for inserting arbitrary html,
inlineSVG is now called inside the html_btn function.

Translation update (hr)

Updated README: Upped year to 2018

Translation update (he)

Translation update (he)

Translation update (da)

Translation update (uk)

Translation update (pl)

Update all.css (Fixes #2169 table alignment RTL-support)

Fixes #2169 table alignment RTL-support

Update .htaccess.dist

Update css.php

typo

#2181 remove an obsolete line

fix and delete some issues from the translation check

https://www.dokuwiki.org/teams:i18n:translation-check

Support Web Video Text Tracks Format subtitles

Translation update (nl)

Translation update (ru)