Merge branch 'typescript_eslint' into v3.1.0

NodeApp/src/commander/exercise/ExerciseCommand.ts

...c/commander/exercise/subcommands/ExerciseCreateCommand.ts

.../src/commander/exercise/subcommands/ExerciseRunCommand.ts

NodeApp/src/commander/session/SessionCommand.ts

.../src/commander/session/subcommands/SessionLoginCommand.ts

...src/commander/session/subcommands/SessionLogoutCommand.ts

NodeApp/src/config/LocalConfigFile.ts

NodeApp/src/helpers/AccessesHelper.ts

NodeApp/src/managers/DojoBackendManager.ts

NodeApp/src/managers/GitlabManager.ts

NodeApp/src/managers/HttpManager.ts

NodeApp/src/managers/SessionManager.ts

NodeApp/src/shared