Analyse: Speed of find dependencies improved for Graphics and
AnalyzedOverview. 

Analyse: Detection of ExternalLibraries included in
FamixCreationService. 

Analyse: External libraries are now included in the default analysis
results, aggregated under root module xLibraries. The xLibraries are
visible and selectable now in AnalysedOverview, DefineArchitecture and
Graphics, while Validate checks rules on xLibraries too.

Analyse\Define\Graphics\Test: Old externalSystem stuff removed.