FreeNAS Code

Use the PathField for home dir in bsdUsers

While I'm here make it PEP8 and add missing migration for uid

Do-Not-Merge (branches/8.2.0,branches/stable-9): Let's keep it in trunk for now
as this results in a screen change, unless someone say otherwise.

Use editable atribute for builtin users/groups

While I'm here do some PEP8

Remove RCS keywords

add a checkbox to cascade bsdUsers if one want to

do not cascade by default on group delete (set 'nobody' instead)

for some reason we need to check unique constrain on user add
unique="True" as a string was preventing that column to be unique

keep old label for submit button post-submit for Change Password

Use correct name in copyright

remove legacy and fix a few typos with the help of pylint

Constrain GUI to what the OS will allow. Fixes ticket 474