further restricted sending teacher_view_moved stanzas so that they should only be sent if the teacher is interactive (ie, not a projector)
further restricted sending teacher_view_moved stanzas so that they should only be sent if the teacher is interactive (ie, not a projector)


Former-commit-id: 3dabfefbafa8a44f8d9d757508c1d9d01bb5e6cc
StackableRegiments/analyticalmetlx,StackableRegiments/analyticalmetlx,StackableRegiments/analyticalmetlx,StackableRegiments/analyticalmetlx