added support for feature-value-triggers
added new helper for handling Knowledge
CHG: extracted findRoot() to KnowledgeHelper
introduced new helpers
chg: extracted generic functionality from Resolvers to Helpers
moved generic functionality from resolver to helper
added new getFeatureValues()
fixed getNewFeatureChoices()
Additional check for Concepts attached to a Variant
Added: getAttachedConcepts(String variantId)
Added Concepts to Variants
Implemented getAttachedConcepts()
Added Concepts to Variants
Implemented getNewConceptChoices()
enabled features
adjusted layout for smaller displays
Added presentation and selection of Features and Values