VocabLearn/VocabLearn.cpp
VocabBuildDB/VocabBuildDB.cpp
VocabMatch/VocabMatch.cpp
* Refactor due to templating of VocabTree class.

VocabLib/include/VocabTree.h
* Fixed bugs due to VocabTree templating, unified template names and
removed default values.

VocabLib/src/VocabTree.cpp
* Removed since methods definition for template classes cannot be put
aside in a source file.