Introduced initial "issue management" app example.
Renamed "hooks" to "add-ons".
Renamed static utility class "Model" to "Models".
Separated readable from editable properties in models.
Implemented retrieval of the current user in a custom User class.
Implemented simple query-based DB search.
Added utils for collection element retrieval with size assertions.
Introduced Users utility class with persisted user retrieval util.
Improved Task Planner demo app.