LDEV-1255: Moving the code for stopping jsps caching to a new custom tag, so that it can be applied consistently across all pages. Moved the utf-8 statements to the same tag so we don't have to remember to put them in all pages.
LDEV-1241: Problem with progess engine getting stuck when a user is in a parallel activity within an optional activity required a change to the LearnerProgress.setProgressState() method call. Learner classes changed to match.
LDEV-1155 revert to storing temp portfolio on server as a constant 'export.zip'; URLEncoded the portfolio name when it is passed as a URL parameter (for i18n purposes); strip out punctuation chars from the export portfolio filename that is downloaded by users.
fixes from todays test session: learner progress to scroll to current act when initially loaded + fix double var use in learner tab and container depths
LDEV-1225: While testing, found that the notSupported.jsp doesn't work properly. This page only appeared when the system tools (gates and grouping) don't work in export portfolio properly, so its not worth trying to fix it. Now if they don't work there is an entry in the main page but no "no supported" page.
LDEV-1182 & LDEV-1126: Fixing up behaviour of the close.jsp - which is called when the user completes an activity that was already finished. There were problems with the parallel activities when one was finished and the user clicked resume (or restarted learner) and with force complete. Now instead of just showing the "close" message, it detects that it is not in the popup window and instead of trying to close it now forwards to the next appropriate screen.
LDEV-1155 filename parameter in response parameter needs to be enclosed by quotes otherwise firefox truncates the filename when it encounters the first space
LDEV-1161: First activity wasn't loading in Arabic. The change to add the lesson id to the welcome page (for the join) hadn't been made to the RTL version.
