minor view improvments to vmware

- adds a console link to all vms
- adds a minimal vm details view

fixes #1842 - Getting hostgroups via the API takes an eternity.

This changes a bit the API resonspe as well, as it makes little sense in a rest
context to return full nested objects (when the child objects can be very large).

therefore, instead of environments and puppetclasses (and eventually smart vars)...

Subnets API

a bunch of fixes to get functional tests running under 1.9.2

added environment API

fix for FactValuesControllerTest#test_create_invalid

Show kind_id in config templates API

add compute_resource.supports_update? to current provider set

api v1 - domains controller

changed dashboard display of interval to use time_ago_in_words