OO-3283: consolidate packages of RSS feed util and servlet for notifications, add and fix some missing i18n keys for notifications

OO-1446: set expiration date for versioned static file ( and transparent.gif ), refactor Workbook media resource to work without temporary files, add flag to media resources to accept or not ranges, add patch for Tomcat 8 ( thanks D. Haag )

OO-990: mostly fix of the authoring GUI, and unit tests, integrate the demo course to the test resource

OO-798, OO-797, OO-796: update the webdav implementation based on Tomcat, make OpenOLAt work under root context, small refactoring of the dispatchers, push raw files dispatcher to its own servlet, implements Digest authentication...

OO-606: don't return "WWW-Autorization" if authenticated, doesn't allow BitKinex in OLATServlet, update cache config converter...

OO-592: remove tx manager annotations scanner, move configurations in resources/serviceconfig to java/... where they are needed, use import instead of the *Context.xml which allow deployment on weblogic and some others small fixes

OO-449: move from ehcache to infinispan to have access to a distributed cache in a cluster environment, fix some issues with a cluster environment

OO-271: refactor the user session management, move the the logic in its own manager, persist the time out values, make the admin GUI a bit better

OO-35: load only once the olat.properties and olat.local.properties and optimize the search of spring configuration

FXOLAT-388: remove dependency to edenlib, rewrite import/export for repository entries, groups and the read method from institution portlet

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branch : bps