Reimplemented constentselector view class
Revert "Implemented ContentSelector as a singleton "charm" modifier for"

This reverts commit 24b167b7552ce8bf6e62933a535752a899c77473.

Conflicts:
	apps/launcher/datafilespage.cpp
	apps/opencs/editor.cpp
	apps/opencs/view/doc/filedialog.cpp
	apps/opencs/view/doc/filedialog.hpp
	components/contentselector/view/contentselector.cpp
	components/contentselector/view/contentselector.hpp
Reimplemented content selector for filedialog and datafilespage classes