LDEV-3316: Get rid of HibernateTemplate and HibernateDaoSupport usage in set of LAMS DAO types from lams_tool_forum. Move DAO hibernate implementations to 'hibernate' sub-package. Introduce DAO interfaces and use references to them instead of to implementations in ForumService.
LDEV-1978, LDEV-3340: Remove AccessPermissionFilter. It was designed to control lesson access for Learners, but it was not really used. With the new SecurityService it is/will be obsolete.