CBT V10 - Word Media / Formula / Shape Fix

Replace/upload this package over the existing CBT.
The Word importer now handles:
- embedded Word pictures
- Office Math (OMML) equations as MathML
- Word DrawingML shapes such as ellipse and mathNotEqual
- VML fallback shapes
- duplicate modern/fallback shape rendering is avoided

Student exam page also improves MathML sizing and re-typesetting after page changes.

After replacing files, RE-UPLOAD the Word questions. Questions imported before this fix do not contain the missing shapes.