[ticket/11879] Replace .live() with .on()

PHPBB3-11879
Merge remote-tracking branch 'cyberalien/ticket/11879' into develop-olympus

* cyberalien/ticket/11879:
  [ticket/11879] Replace .live() with .on()
Merge branch 'develop-olympus' into develop

* develop-olympus:
  [ticket/11879] Replace .live() with .on()

Conflicts:
	phpBB/styles/prosilver/template/forum_fn.js