[Project Cleanup] Removed few more files from CZ.UI. Updated images folder.

Details:
1. Renamed Images to images.
2. Updated few refs to images in UI.
3. Removed few obsolete files from CZ.UI that were not included in solution.
Merge pull request #2 from alex-zen/cleanup

[Project Cleanup] Removed few more files from CZ.UI. Updated images folder.