Fixated domain_id - all users share addressbook
Fixed SQL syntax error caused by previous commit.
Fixed bugs caused by previous commits.
Merge branch 'voipex-fixes' of github.com:bssstudio/php-addressbook into voipex-fixes

Conflicts:
	register/user_add_save.php
Refactored SQL code that was causing multiple inserts.
Merge branch 'master' into voipex-fixes