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Added a field _pipelineName to AutoEvaluationPipeline. This allows to implement AutoEvaluationPipeline::getName() so that AutoEvaluationPipeline is no longer abstract. Consequently, the LuaPipeline is no longer needed.

This change was also used to change the AbstractPipeline constructor signature to pass-by-reference instead of pass-by-pointer for the pipeline's DataContainer. This presents the semantics more clearly since the DataContainer must not be 0.

* Added default values to GenericProperty<T>
* Lua export now checks properties for default values and only sets the property if its value is different from the default value.

* Split up campvis-application executable into campvis-application library and campvis executable. This allows to create a Lua module for the stuff in campvis-application.
* Added Lua binding stub for campvis-application
* Revised LuaTable and it's offsprings to (almost) fully model the Lua table model
* Added MetatableLuaTable to model Lua's metatables
* LuaTable supports caching the current field state in a value map supporting lazy instantiation
* Added LuaTableTreeModel transforming the LuaTable structure into a QAbstractItemModel
* Extended ScriptingWidget to contain both a LuaTableTreeWidget containing a variable view as well as with a LuaCompleter automatically completing the typed Lua commands with the variables extracted from the lua state.

refs #643

* campvis::deinit() also deinitializes PipelineFactory and ProcessorFactory
* Fixed signal_manager::waitForSignalQueueFlushed() returning too early -> fixes occasionally failing AbstractProcessorTest
* Fixed signal_manager::waitForSignalQueueFlushed() waiting for ever in case that the wake-up of signal_manager fails

Renamed ImageRepresentationDisk::getImage() to ImageRepresentationDisk::getWeaklyTypedPointer() for more consistency with the other representations.
Added a UML component diagram of the main CAMPVis concepts as well as a UML class diagram of the ImageData API.

Added concurrent conversion test to ImageRepresentationTest. Added ImageData::getNumRepresentations().

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.

Introducing free campvis::init() and campvis::deinit() functions that take care of initializing all cgt and campvis-core stuff properly and tearing everything down in the correct order again.

Renamed CampvisPainter to PipelinePainter. The PipelinePainter now directly belongs to the corresponding AbstractPipeline, which also owns the pointer and takes care of creating, (de-)initializing and destroying it.

Cleaned up CMake scripts and added correct export definitions so that now CAMPVis can easily imported into other CMake projects through FIND_PACKAGE(CAMPVis).

Removed generation of obsolete gen_converterregistration.h file through CMake since converter registration now entirely relies on explicit template specialization.

Added virtual AbstractPipeline::paint(), which is called by CampvisPainter at the very end of rendering. This method can be used to render additional overlays directly in the pipeline.

* Implemented the actual logic behind the automation mode property in TrackballCameraProvider
* Added mouse wheel zoom support to cgt::Trackball
* Renamed cgt::IHasCamera to cgt::AbstractCameraProxy

closes #642

Fixed IndexedMeshGeometry::hasPickingInformation() returning wrong value and thus GeometryRenderer failing to render correctly on AMD GPUs.

refs #382

Apparently, glBindAttribLocation() does not work as planned with AMD GPUs. Therefore, all Shaders yielded black images. Replaced all attribute locations with hard-coded ones in the vertex shader and removed corresponding convenience function from cgt::Shader.

refs #382

Added onDataContainerDataAdded overload to AbstractPipeline to set pipeline dirty when the render target image has changed. Rendering of multiple canvases at the same time still broken though.

refs #641

* Cleaned up unsused code
* Fixed cppcheck issues
* Fixed depth test issues during OrientationOverlay rendering (had glitches in combination with DRRRaycaster)

Fixed duplicate member in OptimizedRaycaster.

Conflicts:
	modules/vis/processors/volumerenderer.cpp

* Fixed signal issues in VolumeRenderer when updating the raycasting processor.
* Fixed assertions in AutoEvaluationPipeline::onPropertyCollectionPropertyAdded() and AutoEvaluationPipeline::onPropertyCollectionPropertyRemoved().

Conflicts:
	modules/vis/processors/volumerenderer.cpp
	modules/vis/processors/volumerenderer.h

Added AutoEvaluationPipeline also monitoring PropertyCollection's s_propertyAdded and s_propertyRemoved signals.

Issue543: changing raycaster in volumeexplorer: added raycasterfactory, something is going wrong while replacing

Conflicts:
	modules/vis/processors/drrraycaster.h
	modules/vis/processors/simpleraycaster.h

Conflicts:
	modules/vis/processors/volumerenderer.cpp
	modules/vis/processors/volumerenderer.h