Replaced some remove buttons with fontawesome icons.
Fixed behaviour of output filter configuration to not require .tt prefix for pre filters.
CSS tweak: set word-wrap for ArticleBody

this allows one to set DefalutViewNewLine to a huge value (or 0) and
still not get any horizontal scroll bars in the browser, even if the
article contains words that are longer than the viewport is wide.
Fixed: Adding templates with same name in AdminTemplate leads to SQl error message (bug#10582).
Config item there is on wrong place in SysConfig, thanks to S7Design.
Disables Subroutine Load redefined warnings after SysConfig change, thanks to Paweł Bogusławski.
Merge remote-tracking branch 'upstream/master' into otrs-master