Add a link in the main menu to for translators. Patch by Stan, fixes #2501

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@15059 3db68df2-c116-0410-a063-a993310a9797
Forgot to fix some strings

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@15060 3db68df2-c116-0410-a063-a993310a9797
Enable/disable GenTangents when enabling/disabling PreferGLSL. Fixes #2505.

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@15061 3db68df2-c116-0410-a063-a993310a9797
Translate some message boxes when opening websites.
Fix a typo. Refs #2501.

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@15062 3db68df2-c116-0410-a063-a993310a9797
Initial modern buttons. Lobby/prelobby now only rely on the modern common files.

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@15063 3db68df2-c116-0410-a063-a993310a9797
Merge 'remotes/trunk'