Replaced the hardcoded mode parameter in the method 'getFolderContentsExcludeHome' with the mode value supplied by the web service call 'getLearningDesigns'
Added comment explaining the mode parameter for the web service call getLearningDesigns.mode = 1 : AUTHORING mode, both valid and invalid learning designs will be returned.mode = 2: MONITORING mode, only valid learning designs are returned.
Display an error message if the current activity for a user is null and it can't be recalculated without doing resume, or resume automatically if it was a system gate and the gate activity has been removed.
When a design is edited using live edit, we may have added activities on the end. So if anyone has the lesson marked as completed in their learner progress, the completed flag will need to be reset.
More handling for "null" current/next activity - needed for the stop gates being removed.Also now check that any activity being commenced isn't a live edit + not read only activity. This will stop any user that evades the stop gates from making activities after the stop gate read only - they will not be able to do the next activity. Given that the learning design is already loaded into memory, it shouldn't add greatly to the progress engine steps (not compared to everything else!)
