open #250 Fixed min and max widths for panes to prevent weird pane expand/collapse behaviors, like Inspector covering the main view area; Added min-width to .holder-all element;
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.