[DDC-2282] Fix pagination problem with SQL Server.

ORDER BY removed from all count queries when on SQL Server
Fixed SQLServer ORDER BY problem in paginator CountOutputWalker
Added test to check query with ORDER BY and SQLServerPlatform
Merge branch 'GH-572' into 2.3
Don't add empty expression to another one
[DDC-2340] Fix bug with dirty collection matching + ordering.
Merge branch 'DDC-2340' into 2.3
Fix bugs in tests
Fix SimpleObjectHydrator behavior when column not exists in fieldMappings, relationMappings and metaMappings
Merge branch 'GH-593' into 2.3
[DDC-2300] Fix version xml mapping and serialization of ClassMetadata.
Merge branch 'DDC-2300' into 2.3
[DDC-1666] Fix bug where orphan removal on one-to-one associations lead to unique constraint errors when replacing an entity with a new one.
Merge branch 'DDC-1666' into 2.3
Fix DDC-2090
Merge branch 'DDC-2090' into 2.3
Bump Dbal Dependency to 2.3.3
Release 2.3.3
Bump dev version to 2.3.4
[DDC-2224] Rewrite instanceof feature with parameter needle ClassMetadata breaks caching of queries.
[DDC-2224] Adjust ClassMetadata processing
Merge branch 'DDC-2224-2' into 2.3