Move project selection dropdown to select2 multi-select

[Leland]

Should probably then put a "Refresh" button for active projects elsewhere.

Also see http://jedwatson.github.io/react-select/

[toddbc]

This would be relatively easy to do now that react-select is used for resources...

That said, I often filter for a string like "build" or "remedation" in the project column.

[Leland]

Closing per #158