Now unchecking checkboxes not specified by selection array.
No longer modifying previous selection array.
fixed width vs height bug
AttributeSelectorPanel now figures out what tool is associated with the
specified target.
Simplified ColumnListComponent and DynamicColumnComponent so vis tool
does not have to be specified.
DynamicColumnComponent now allows setting a column wrapper (for
nested color columns).
Created CustomCheckbox, easier to click.
General code & GUI cleanup.
now easier to open console by clicking in upper-left corner