no-jira: implement a workaround to the NPE at startup in ACMethodManager, AC package use more autowired, upgrade spring the last 3.x version, hibernate to last version, mysql and postgresql jdbc connector

OO-984,OO-990: removed unused stuff in the search of my courses, enable real admin search for admin in authoring environment, don't show the resource list in catalog nodes without resources...

OO-1068 don't animate menu on small screen reload, add custom form footer message for login, hide toolbar in course sites, add icon configurability

OO-1068 show full bread crumb path in course, more theme configurability, add 'realistic' styles as theme option

OO-1068: fix HTML errors in details page of repository entry and link to authors which shared the same id, fix duplicates id in my courses

OO-990: fix a case where the SCORM package is not detected if the manifest files is at the root level and a single folder contains the SCOs

OO-1068: fix z-index and overflow issue in landing page administration, replace dropdown with a popover

OO-1000: fix mapping and view for the chat roster where the key of the groups were shown and not the name

OO-1068 fix different portrait image sizes, make it mid-sized, make expenditure of work field more flexible (ZAG review)