Added Nitrous framework submodule.
Added Nitrous framework
Authorization module code refactoring and optimization
Removed unused files.
Updated gitignore entries in the assets/soessions folder.
User requests refactoring (wip, unstable)
Code refactorization for PUT /user
Fixed incorrect user email update.
Refactored GET /user/{user}
Refactored GET /user/getByUsername/{username}
Added /user/batchAdd and completed User module
Refactoring Institution module (wip, unstable)
Added user photo upload with HTML form test case.
Updated gitignore entries.
Refactored institution module
Merge branch 'smile-2.0-dev-service-nitrous' of https://github.com/SMILEConsortium/smile_global into smile-2.0-dev-service-nitrous
Added user photo upload for the following requests:
> POST /user
> PUT /user/{uuid}
> POST /user/batchAdd
Merge branch 'smile-2.0-dev-service-nitrous' of https://github.com/SMILEConsortium/smile_global into smile-2.0-dev-service-nitrous
Added auth verification to DELETE /institution
Fixed http status code for error on DELETE /institution