Added status labels to QuickAnalysisPart to notify user of how many
analysis jobs will be run
Moved SafeAnalysis and SafeImporter to utilities
Made Result abstract, added factory method to create subclasses, and am
enforcing the implementation of a 1-arg ctor taking a File.
Updated IAnalysisPlugin to return IProjectDataContents rather than
Results directly, Results are now created by factory.
Expanded MetaPart context-awareness
Fixed a minor bug in QuickAnalysisPart