Test method test_user_modify() added
TelekomLabs-DCO-1.1-Signed-off-by: Łukasz Biernot <lukasz.biernot@gmail.com> (github: ElmoVanKielmo)
Rewritten lots of stuff - modify user works
TelekomLabs-DCO-1.1-Signed-off-by: Łukasz Biernot <lukasz.biernot@gmail.com> (github: ElmoVanKielmo)
Merge branch 'modify-user'

Conflicts:
	src/litedesk/lib/active_directory/classes/base.py
Merged modify-user into master
TelekomLabs-DCO-1.1-Signed-off-by: Łukasz Biernot <lukasz.biernot@gmail.com> (github: ElmoVanKielmo)