Remove sorting functionality from all tables

[carma12]

Currently, the users' table elements can be sorted by column. This is useful in small data sets, which is not the case for the FreeIPA: despite the LDAP limitation, a large amount of data is expected to be shown in the tables. This fact makes the sorting functionality quite difficult to maintain and implement.

That's why the sorting functionality should be removed from the Users' tables (active, staged, and preserved) and other sections where it has been implemented.