GPII-187: Working with composite panels with few problems

This pull request lays out the "increase size" adjusters of GPII-187 inside a composite panel. This had to be done outside the sliding panels until this functionality is fixed. It also contributes some fixes to these adjusters.
Known bugs:
1) cursorSize and textSize always seem to remember the immediately previous saved value. They both use a decorator, maybe the issue is there?
2) Passing classnameMap as an option in auxiliary schema and referencing it from the component doesn't seem to work. Had to move the styling classes of magnifier Position/Follows outside the aux schema, inside the component in order to work.
3) General styling broke after moving adjusters outside sliding panels.