updated submodules
Merge remote-tracking branch 'origin/decomposition'

Conflicts:
	modules/imageprocessing
updated all modules to most recent version
updated accroding to most recent modules
changed to new cmake build system
fixed smaller problems with new build system
updated modules
rearranged module sopnet
annotated ProblemConfiguration with spatial information
removed gui dependencies from problemdump
started implementing SubproblemsExtractor
implemented SubproblemsExtractor
added inter-section interval getter for variables to ProblemConfiguration
added getter for LinearConstraints by variable list
improved (well, fixed) command line help for option 'branchSizeRatioThreshold'
changed nomenclature: Sub{solution,problem}[s] -> {Solution,Problem}[s], in favour of new Subproblem class
rewrote SubproblemsExtractor for new Subproblems data structure
implemented SubproblemsWriter
implemented sketch of SubproblemsSolver, hooked it into Sopnet pipeline creation
updated modules