Fix for GEOT-4510
removed unused import
fix failing unit test in geoserver; rename and duplicate the maxFeatures property in AbstractMappingFeatureIterator.java.  One limits the data query, the other limits the number of features coming back from the request.  Fix unit tests to take account of this.
Merge remote-tracking branch 'upstream/master' into app_schema_maxfeatures_sql
fix failing unit tests in DataReferenceWfsPostgisWithJoiningTest by creating a new constructor argument in AbstractMappingFeatureIterator to indicate if the data is denormalised
fix spelling mistake, remove changes to unit test
remove test file
removed test data
Merge pull request #228 from GeoffWilliams/app_schema_maxfeatures_sql

Geoff Williams fix for GEOT-4510 -- app-schema plugin should provide option to pass max features count through to SQL