CLC-3943: adding the allowfullscreen attribute to the LTI iframe to allow fullscreen in video webcasts
Merge branch 'CLC-3943' of github.com:elicochran/calcentral into CLC-3943

* 'CLC-3943' of github.com:elicochran/calcentral:
  CLC-3943: adding the allowfullscreen attribute to the LTI iframe to allow fullscreen in video webcasts