Make MACs optional on static interfaces unless DHCP enabled
Add custom clean for dynamic interfaces
Edited display fields for tables
Migrate all interfaces in public and private views
add system key-values to migration
Fix faulty workgroup migrations
Remove department and location fields from system model
Ignore object not found errors while migrating
Merge pull request #161 from murrown/mac_addr_optional

Mac addresses are optional if DHCP is not enabled
key values appear instead of breaking system detail view
Merge pull request #171 from murrown/system_keyvalue_migrate

System keyvalue migrate
Merge pull request #172 from murrown/dhcp_migrate_ignore_not_found

Ignore object not found errors while migrating
Merge pull request #165 from church29/Interface_display

Edited display fields for tables