Simple CRUD-test for ChangeTriggerType.
Change root element of config xml to '<meta/>'.

(All XML config fields in Cinnamon domain classes should have /meta as the root element).
Removed obsolete description field.
Removed unused constructor with String-based map-params.
Removed hasMany association (bidirectional association is not required here).
Removed obsolete constructor.
Fixed all-params constructor (was ignoring action parameter).
Removed unnecessary belongsTo relation to ChangeTriggerType..
renamed 'initialize' Environment to 'initializeDb' to prevent name clash with Environment.initialize.