Conflicts:

	lib/setup.php

Now slugify is performed on whole filename (including extension). Changed method of adding index number (using regular expressions pathinfo() method removed).

always emit the preSetPassword hook, this should only indicate the intention. Finally the post-hooks indicate if it was successful or not

Cache: mount user mountpoints to make sure that // exists before accessing it. Fixes #2553 and #2374

adding PHPDoc comment for $user within the hooks callbacks
fixing PHPDoc comment on isLoggedIn()