Updated periodicity tracker
Updated ROS settings
Changed to new BlobDescriptor data structure
Merge branch '1.2.0' of https://github.com/tim36272/project-r into 1.2.0

Conflicts:
	bag_on_person.launch
	blobs.launch
	src/dhs/CMakeLists.txt
	src/dhs/executable/BagOnPersonProcessor.cpp
	src/dhs/executable/blob_descriptor.cpp
	src/dhs/include/BlobDescriptor.h
	src/dhs/include/Types.h
	src/dhs/include/Utility.h
	src/dhs/package.xml
	src/dhs/src/Utility.cpp