System gets deleted if last dynamic interface and no static intrs exist
If last interface is static and it is being deleted sytem is also deleted
When deleting an interface in either the detail view, or the list view, the appropriate confirmation message is given
Deleting a system now deletes its interfaces as well, a confirmation is sent warning the user of this
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Fixed dirtysoa tests
Fixed Cname tests
Fixed domain auto_delete tests
Fixed a grammer error
modify api tests to use django TestCase
Merge pull request #347 from church29/system_delete

System delete
All tests passed
Full Functional
Merge pull request #408 from murrown/fix_api_tests_setup

Modify api tests to use django TestCase
fix erroneous default dhcp_build configuration