LPS-32039 upgrade to SOLR 4
LPS-32039 updating solr config files
LPS-32039 Source formatting
SOS-1344 Tasks Portlet - No default Assignee when added to a Site
Backend: Added if statement to stop a notification from being sent when the receiving user does not exist.
SOS-1344 Tasks Portlet - No default Assignee when added to a Site
Frontend: Added "Unassigned" as a possible assignee for tasks.
SOS-1344 source format