Moved object name validation to validate.py.
Whitespace fix.
Validation: added hostname, mac,  ipv4 validation routines.
pep8: cobbler/item.py:14: 're' imported but unused
Moved add_options_from_fields from utils to cli.

This function will never be called by anything else.
Refactor imports in utils.py.
Re-order imports in cobbler/api.py.
Remove the 'template_remote_kickstarts' feature.

Only trust locally hosted kickstart files to increase (the sense of)
security. This also helps simplifying some code aswell as improving
the enduser experience (cobbler-web).
Merge pull request #1127 from jmaas/master

More cleanup work