started one-group table
resurrected row check in all viewing places

I think this is done. Just need to test. Also deleted group_state and launch_config tables schema
all cql statements end with semi-colon
some tests updated - they are working
Correcting test mistake done in earlier commit - reverting

where the test should check for dict but was checking for string (like earlier)
Got CassScalingGroupTestCase working

fixed code related to these tests

TODO: get CassScalingScheduleCollectionTestCase and CassScalingGroupTestCase working
CassScalingScheduleCollectionTestCase working
Initial implementaiton of an in memory undo stack.
Fix lint and add a verifyObject test.
Simple integration of undo stack with launch_server workflow.
Pass undo stack through the supervisor to launch_server.  Supervisor will rewind the stack if launch_server fails.
Fix lint.
Initial implementation of load balancer cleanup.
Make sure undo is passed all the way through, and serialize calls to add_to_load_balancer so that the undo stack works as expected with multiple load balancers where the first may succeed.
All tests done in test_cass_models

However, few tests added to check for resurrection are yet to be done. They are added not not
implemented yet
list_group_states resurrection tests added
view_state and config resurrection test added

also, pep8 fix
Merge branch 'master' into one_group_table
changed active, pending, policyTouched json entry
pep8 fixes