FLOE-116: Created a base panel grade to be shared by all metadata panels.
FLOE-116: Added unit tests for panel component.
FLOE-116: Modified the panel unit test to pass in the initial model value for the indicator component.
FLOE-116: Properly scoped the panel selectors.
FLOE-116: Using model transformations in panel

The panel base grade uses an updateModel function to transform a given model, with the supplied transformation rules and updates the model of the indicator.