Refactored pipeline and processor registration:
PipelineRegistry and ProcessorRegistry are now part of campvis-core. Furthermore, moved all calls to PipelineRegistrar<>/SmartProcessorRegistrar<> to a separate cpp file for each module. This way all registrations are at one central location and including headers in external projects does not lead to double registration. This commit also removes the obsolete columbia and manualsegmentation modules.
modules/manualsegmentation/pipelines/manualtissuesegmentation.h → modules/advancedusvis/advancedusvis.cpp