Perform initial population of scope in mct-representation
at link time, instead of waiting for watches to be fired;
this avoids the need for extra digest iterations, which
Angular detects as indicators of infinite loops (throwing
exceptions accordingly.) Fixed in the context of supporting
transition of editable Layouts, because these errors were
being thrown upon exiting Edit mode. WTD-535.
Add representers as a category of extension; these are extra
steps to perform when representing a domain object. This
will be used to support automatic mutation/persistence of
domain objects from a watch, while avoiding bloat within
the mct-representation directive itself. This, in turn,
simplifies the persistence strategy to be employed by
Layout views when editing concludes. WTD-535.
Use ng-model when communicating state to/from the
tree in browse mode. This will simplify implementation
of the Locator control, which also uses a tree, but
which should not set navigation state. WTD-593.
Add spec for the mct-representation; separate out gesture
attachment to improve testability and increase cohesion.
Part of ongoing initial authorship of representation
component, WTD-521.
Add spec for ContextMenuGesture, which exposes a menu
of applicable actions for objects when it is performed.
One of the built-in gestures supported by the
representation component, WTD-521.
