OO-627: implement data protection feature for "last visit" in course, group and repository member management

OO-535: import items directly in pools, lists... implements new item, add more attributes in the table, wording...

OO-613: unify Onyx QTI 2.1 tools with the OLAT QTI 1.2 tools to remove duplicate code, change the WebService stack for Onyx

OO-623: add fields for managed groups and repository entries, add a lifecycle DB object, enhance the REST API to search with externalId/externalRef...

OO-622,CL-225: remove username from GUI in place where is not really needed and students can see it. Mark others place with //TODO username where it need more works and/or the username is only visible by author/coach/admin... Additional fix the setup sql for MySQL (index too long).

OO-621: add more configurable options for Adobe Connect in olat.properties, make some other options easier to configure

OO-615: implements a simple filter to allow CORS (cross origin resource sharing) but restricted to the rest api

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-592: break direct dependency to UserDataDeletable and DeletableGroupData interfaces, remove unused spring configuration files...

OO-535: rework license editor, add column editable, callout to create a list or add to an existing one, sort by mark, drop to menu item favorit, drop to my questions trigger a popup...

CL-220: add missing update SQL, retrieve the AC informations as batch (Oracle doesn't like in(...) statement with more than 1000 keys)