Added gen_ipv4() and gen_ipv6() methods
Added tests for gen_ipv4() and gen_ipv6() methods
Fixed tests for gen_ipv4() and gen_ipv6() methods
Removed tabs in forms.py
Merge pull request #140 from amatellanes/master

Added gen_ipv4() and gen_ipv6() methods
Merge pull request #142 from tourlines/imports_moved_to_allow_use_built-in_generators_in_settings

Imports moved to allow use built-in generators in settings
Enabled the parent comparison for the generator, decreasing the need of a custom field configuration