Merge branch 'typescript_eslint' into v3.1.0

.gitlab-ci.yml

ExpressAPI/.eslintignore

ExpressAPI/.eslintrc.json

ExpressAPI/.idea/jetbrainsConfiguration

ExpressAPI/.idea/jsLibraryMappings.xml

ExpressAPI/.idea/jsLinters/eslint.xml

ExpressAPI/nodemon.json

ExpressAPI/package-lock.json

ExpressAPI/package.json

ExpressAPI/src/InitialImports.ts

ExpressAPI/src/controllers/Session.ts

ExpressAPI/src/helpers/DojoValidators.ts

ExpressAPI/src/helpers/GlobalHelper.ts

ExpressAPI/src/managers/GitlabManager.ts

ExpressAPI/src/managers/UserManager.ts

ExpressAPI/src/middlewares/ParamsCallbackManager.ts

ExpressAPI/src/routes/AssignmentRoutes.ts

ExpressAPI/src/routes/ExerciseRoutes.ts

ExpressAPI/src/routes/SessionRoutes.ts

ExpressAPI/src/shared