Add gl test page
Draw simple triangle with out any type of transformation.
Revert "Add gl test page"

This reverts commit 9bbad27a57b751f67138df95251ae4acb1565e05.

Conflicts:
	defend.html
Revert "Revert "Add gl test page""

This reverts commit 97be723027ac46584c66021a0dad4501ff6ecfef.
Add gl essential.
Render triangle with matrix