Initial commit of ActionTypeMgr, part of BuildStore.
Add unit tests for ActionTypeMgr, but only for the root folder and the
basic shell command action type.
Add default slot types for the "Shell Command" action type.
Change the "addAction" method to the more specific
"addShellCommandAction", since this is now just one type of action (not
the only type).
Add association between actions and actionTypes.
Add slot values that can be set/retrieved via ActionMgr.
Fix a bug where upgrading to schema 402 would cause the buildAction
table fields to be in a different order than if a fresh database was
created.