Invoke the destroy methods of any active representers when
a scope is destroyed; supports time controller, which needs
to accurately track when it has or hasn't been attached to
a view. WTD-1515
Trust resource URLs to skip SCE-checking (which profiling
flags as a performance problem) for mct-include and
mct-representation; these URLs are pulled from bundles and
not user-entered, so should be trusted. WTD-1256.
When changes to a domain object's modification timestamp are
detected, refresh only the capabilities associated with that
domain object (instead of rebuilding the whole view.)
Specifically avoids latency when layout views are rebuilt,
WTD-716.
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.
