added gui components for selecting image templates
stop mocking
retrieve and store tenantId for rackspace users
added settings to hold default image
load/store default image value from settings
fixed tests after removing mocks
Merge pull request #15 from planctechnologies/gns-14

Gns-14 - Populate server images to start instances from
Merge pull request #73 from planctechnologies/dev

Gns-14 - Populate server images to start instances from