[Scenario] Add tag component
[Scenario] Add initial pie chart summary view
[Scenario] Aesthetic improvements to summary view
[Scenario] Add licenses, comments to new classes
[Scenario] Merge latest from master

Merge latest from the master branch
into the tags branch.
[Scenario] Refer back to component from tag

Refer back to the original component
from the tag capability; this allows,
for instance, creating views of that
component (like clickable labels) in
the summary view.
[Scenario] Show legends in summary
[Scenario] Add tag component icon
[Scenario] Tweak summary legend layout/drawing
[Scenario] Highlight summary legend on hover
[Scenario] Skeleton types for tag repositories
[Scenario] Add persistence support to tag repository
[Scenario] Use atomic reference for tag repo model
[Scenario] Add licenses to source
[Scenario] Add tag repo to containment policy
[Scenario] Expose tag component via Provider
[Scenario] Add tag repos as bootstraps in Activator
[Scenario] Explicitly initialize tag repo bootstraps
[Scenario] Move bootstrap components to provider

Move the introduction of the Scenario
plugin's bootstrap (top-level) components
from the Activator to the Provider in
order to utilize the new platform support
for this behavior provided by
nasa/mct#208
[Scenario] Added license to TagComponent