LDEV-1284 add check for when organisation is missing in integration entry; don't add new users to the integration org since there no longer is one. Backported from HEAD.
merge changes from HEAD to ldap2_0_4 branch for LDEV-1284, making integration organsiations not mandatory (requires alter_206_integration.sql update script to be run)
improve speed of bulk update by running in separate thread (bypass hibernate filter); make sync page refresh every 5 seconds to prevent timeout (and also to detect when bulk update is finished)
support multiple base DNs; support paged search results from ldap; remove bulk update method from spring's transactions; improve bulk update results report