Adding CRUD functions for Host Groups
Merge branch 'master' of https://github.com/omaciel/robottelo into hostgroups

Conflicts:
	tests/ui/baseui.py
Adding update crud function and a test that uses it
Merge branch 'master' of https://github.com/omaciel/robottelo into hostgroups

Conflicts:
	lib/ui/user.py
whitespace fixes
PEP8 cleanups
Fixed two locators, removed unused import
PEP8 line shortening
Merge branch 'master' of https://github.com/omaciel/robottelo into hostgroups

Conflicts:
	tests/ui/baseui.py
Merge pull request #144 from blrm/hostgroups

Hostgroup CRUD functions and tests