Resolves "Adjusting Courseware breadcrumb text display"
This MR fixes #727 (closed), the parents except root and direct parent will be displayed as "..." and the current item text in breadcrumb now will be shortened for a longer texts.
This MR fixes #727 (closed), the parents except root and direct parent will be displayed as "..." and the current item text in breadcrumb now will be shortened for a longer texts.