App Windows should be a key/value store instead of Array #100
Description
Is your feature request related to a problem? Please describe.
Currently, System.Manager.App.apps[appIndex].windows, or the store for an Application's Windows, is an array. It should be a key/value lookup.
Describe the solution you'd like
Any place that uses the data store path System.Manager.App.apps[appIndex].windows should be updated to use a key/value instead of an array. Specifically, many functions lookup an app by running findIndex() with the window ID as key. This would be much easier if we specified the app lookup as System.Manager.App.apps['MyApp.app'].windows['WindowID1']`.