Added iframe support (by: Frank Ronny Larsen).
Fixed iframe solution in IE8.
Fixed styling in IE8 when using iframe.
Allow MPL and MPL2 licenses
Add allowed licenses to h5p's as well
Why are we using | instead of / around the regex? Change to / so that we may use | inside the regex
BUGFIX: The strikethrough was removed when an H5P was saved
Issue #2120227 by ellinokon & gafolini: Export functionality

Created the functionality for exporting h5p nodes to h5p packages.