Removed gap below bottom bar. Moved around constants for the resizing of the tree. Also added comments in layout and reformatted that slightly.
Directives
mct-scroll-xis an attribute whose value is an assignable Angular expression. This two-way binds that expression to the horizontal scroll state of the element on which it is applied.mct-scroll-yis an attribute whose value is an assignable Angular expression. This two-way binds that expression to the vertical scroll state of the element on which it is applied.