ASGARD-1198 - Speed up cache initialization

This cuts down init time from 4 min 30 seconds to 2 minutes 30 seconds
Merge pull request #365 from joesondow/ASGARD-1198-Speed-up-cache-initialization

ASGARD-1198 - Speed up cache initialization
ASGARD-1218 - update Grails wrapper for Grails 2.2.4
Make this unit test pass when run via grailsw test-app
Merge pull request #367 from joesondow/ASGARD-1218-grailsw-2.2.4

ASGARD-1218 - update Grails wrapper for Grails 2.2.4
ASGARD-612 - ASG force delete buttons should start long-running task to wait for deletion to finish
rename instanceStillExists to asgStillExists
Merge pull request #368 from jgritman/wait-for-delete-asg

ASGARD-612 - ASG force delete buttons should start long-running task to ...