OO-2172: refactor the spring configuration to be more Spring 4 friendly, remove the cycle generate by the properties injection, deployment of course and user in a separate module

OO-1483: implement a prewarm infrastructure to warm-up openolat caches, implement it for velocity templates, display names of users and QTI 2.1 resources

OO-1362: make the guest login, links for guests and invitation login configurable in the administration GUI

no-jira: implement a new OLAT module which use the Spring annotation to retrieve its setup properties, this module prevent dangerous cycle in the dependency tree which ended with module loaded several times, remove unused spring dependency

OO-750: refactor the mail package to provide a MailManager as a service, enable sending HTML E-Mails, add a customizable E-Mail template with a small editor in admin

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-460: make the spring xml configuration easier to configure with the profile function of spring 3.1

--HG--
branch : 80-patch

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

--HG--
branch : bps