pep8
Remove dns-servers option
more pep8
Restrict label sizes to 63 characters

Conflicts:
	cyder/cydns/validation.py
Merge branch 'maintain_migrate-fixes' into validation

Conflicts:
	cyder/cydns/validation.py
Reapply "Restrict label sizes to 63 characters"

(original author: murrown)

...since 45b9111's changes were reverted by an merge conflict.
More spelling corrections