use USERS tablespace whn none is given, only needed when we need to create a user, does not need to be stored in config

oracle does not need sequence suffix, manually set database name to allow fetching db schema, don't shutdown db - we are using utf8 to connect

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