Add prs/commits/features/fixes in develop branch to next branch

1. #1232 : fix issue #1215 lang collection in metas is missing for controller
2. #1237 : Modify tests to solve the header letter case difference between browsers
3. #1241 : Fix issue #1238 Please lower RS log messages for duplicate resources from "info" to "debug"
4. #1256 : fix issue #1251 easy way to get contextualized models
5. #1263 : add command option to choose selenium host to run test with different browser
6. #1279 : Workaroud YQL issue for running newsbox tests
7. #1268 : fix arrow version to 0.0.82