RefactorDW Code

- repaired all unit tests that are still failing after adding media file refactoring support
- fixed some warnings

- Increased version number from 1.1 to 1.2a

- Added new feature idea
- Added --enableassertions to JUnit test execution in CI build

- Proceeded preparing new feature: media files are now included in models and interfaces.
- added additional unit tests
- various refactrorings
- fixed most unit tests

- Proceeded preparing new feature: media files are now included in models and interfaces. Goal is
to include media files in refactoring
- added additional unit tests
- various refactrorings

- prepared new feature: media files are now included in models and interfaces. Goal is
to include media files in refactoring.
- RefactorDW now checks if host OS is compatible before executing any refactorings
- added additional unit tests
- various refactrorings

Removed comments and unused code

Fixed error in text

Added limitation notice, that media directory is not being refactored at the time.

Changed version number from 1.0.1 to 1.1