Common/include/DynamicMat.hpp
* Changed names of some variables and methods, while updated some
comments.
* Re-ordered attributes and methods.

Common/src/DynamicMat.cpp
* Re-implemented class to cache by descriptor and not by matrix of
descriptors.

Common/src/FileUtils.cpp
* Added loadDescriptorsBin method to the FileUtils namespace.
* Changed variable name.

Common/tests/DynamicMat_test.cpp
* Re-factor due to method name change.