[Scenario] Fix bugs surrounding Save All 

Together with nasa/mct#148 this pull request addresses #30 and #33

Primarily this chases down edge/corner cases where Timelines and Scenarios would behave unexpectedly after a Save All. Typically these could be traced to the display of out-of-date manifestations of user objects in embedded/managed views

* Refresh selections in Inspector after view has been persisted (to avoid pointing to old manifestations of objects in Inspector)
* Retrieve updated manifestations of components and propagate them to embedded views after top-level view is persisted
* In other cases, simply rebuild views entirely after a Save All (also to ensure up-to-date manifestations)

Additionally, this merges in updates for Launcher compatibility