mapper work

-tweaked debugger panel
-fixed search issue where clearing would not clear references to searched location.
-cleaned code/better comments
-fixed item issue where clear item would render future placement inoperable
-fixed issue with theme
-fixed clear item sync with clear search
-added better poi line desc placer (now places on a point not just spatial center
-attempted to solve logic errors with line center placement, instead settled for placing at start
-fixed issue where line path through error on change