Code refactoring done.
OpenCV library version type changed to int.
Some UI labels updated.
OpenCV Manager verison incremented.

This fixes random failures in Java wrappers.

Sometimes information about dependencies causing disabling were loosed and it
was not possible to correctly display these dependencies in status report

Invalid links and refences fixed.
SpaeseMat class documentation updated.

This suppresses "unused variable" CMake warning when user explicilty disables
module unavailable in selected configuration

issue 2526

issue #2678

(Sometimes sample_data became bad because the buffer with its values was deallocated early).