added lightfield applet module
added start script for lightfield workflow
updated lightfieldworkflow
updated lightfield
added drawer for lightfieldgui
simple operations on lightfield now functional
added test-project for faster debugging
added support for color channels
tried to integrate structure tensor
some changes
removed LFLib folder
refactored lightfield operators
depth is now displayed correctly in ilastik
small fixes for lightfield view
small fixes on opCalcDepth
updated lightfield code