STYLE: Fix acronyms, correct files names, correct doxygen class names, block comments, removed unneeded virtuals, removed constructor/destructor briefs, fixed some class briefs, fixed namings in SWIG wrapper, fixed some typos/bad comments

BUG: Critical nodes not resolved in complex cases, critical node resolve tests, write task graph on finding cycle, remove unused nodes & critical resolve in building scene task graph

REFAC: Interactor style and keyboard control refactor to fix dependencies, continued library reorganization

The variable is currently used only in Wrappers project and was originally
introduced in 6acfa41f (COMP: Build audio only on windows).