Removing "logme" from comments.

BLD-608

Refactoring of Drag and Drop complete. Draggable properties isUsable, isOriginal included, but functionality connected with them is not complete. Found and fixed bug with z-index ordering.

Fixed annoying bug whre if you dragged any part of the base image or other parts of the Drag and Drop problem, then the browser would start highlighting the elements.

Added correct handling of invalid (missing) base images. Now error is reported, and the damage is reduced to a minimum.

Fixing bugs. Now resize of window does not mess up targets. Dragging is much smoother on touch pad. Removed border from draggable when it is not in slider. The whole applet fits into min-width of main part of page.