initial vocab tree work
Delete tests_config.hpp
dunno what changes
Finished building the tree, added searching. Changed numeric.h and compute_sift_simple.cxx so they would compile
Initial saving work, about to redo tree and file structure
Changed the structure of the tree to be in an array and put all inverted files into an array for easier serialization
Finished writing save and load functions
Merge branch 'initial_tree'

Conflicts:
	modules/search/vocab_tree/vocab_tree.cxx
	modules/search/vocab_tree/vocab_tree.hpp