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

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

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

files were deleted by fa2c560d

not perfect, but it works

Per request of @splitbrain

Access attempts to security.png are normally denied, so the name of the file will be more self-descriptive