Merge pull request #1172 from dennishendriksen/feature/genericdataexplorer

Fix csv download #2271
Merge pull request #1173 from dennishendriksen/feature/genericdataexplorer

fix OmxRepositoryIterator if no pageSize is defined
fix charts #2271
Merge branch 'feature/genericdataexplorer' of https://github.com/molgenis/molgenis into feature/genericdataexplorer