LDEV-1134: Preview now lets the author select a branch to view, but the author can only do one branch. To view all branches, the author needs to run preview multiple times.
added shib servlets to web-security so that ShibLogin is invoked (and shib user created if necessary) before shib servlets have to add shib user to lesson class; refactored ShibExportPortfolioServlet to extend ShibLearnerServlet; moved xdoclet out of .java files because it doesn't work properly with a servlet extending another servlet
The Edit Class button didn't work in monitoring for Shibboleth users - they don't have a role in the organisation that backs the lesson, so they couldn't get the organisation details. Changed the getOrganisationsForUserWithRole call so that if they don't have a role in the org, it still returns the basic details such as the name, etc.
added new shib attribute for the ServerURL of the origin LAMS server to help determine whether user is local or not; added roles for shib users in ShibLoginServlet
LDEV-1134: Branching: Added stopAfterActivity flag to activity, which will allow us to "end" a lesson at the end of the activity. Progress engine changes done.
LDEV-1134: Branching: Added stopAfterActivity flag to activity, which will allow us to "end" a lesson at the end of the activity. Authoring changes done.
