Refactor Flyway DatabaseUtils to properly search by Oracle "Schema" (i.e. User), see getSchemaName()
Also add a (hidden) ability to initialize an *old* version of a DSpace DB for testing purposes.
More refactoring. Fix an infinite migration loop caused by "dspace database migrate [version]" accidentally recalling DatabaseManager.initialize() (required moving MigrationUtils). Also add detailed warnings to this hidden migrate option.
Fix bug where sequence_name wasn't being canonicalized in
sequenceExists(). This caused issues on Postgres
Minor spelling fix.
Minor cleanup of System.out messages so they mostly fit in 80 char lines
Merge pull request #731 from tdonohue/flyway_oracle_fixes

Flyway fixes for Oracle (DS-2244, DS-2250, DS-2251)