add translation for "New Account" and strip trailing whitespaces

finnish translation update

update german translation

this string was untranslatable. thanks to siilimestari for pointing that out

don't flash frontend on hilight - while in-game

fix pas2c(?)

remove unimplemented ban action from user context menu

fix some indentation

fix view limits in stereo 3d

fix for issue #234 - the framebuffers for side-by-side and top/bottom had alpha channels. so when sprites with alpha were blended into the framebuffer it would blend the sprite pixel alpha with the fb pixel alpha