Merge remote-tracking branch 'origin/dev' into feature/own-learning-objects

# Conflicts:
#	backend/package.json
#	backend/src/config.ts
#	backend/src/controllers/learningObjects.ts
#	backend/src/controllers/learningPaths.ts
#	backend/src/data/content/attachment-repository.ts
#	backend/src/data/content/learning-object-repository.ts
#	backend/src/data/content/learning-path-repository.ts
#	backend/src/data/repositories.ts
#	backend/src/entities/content/learning-path.entity.ts
#	backend/src/exceptions.ts
#	backend/src/routes/learning-objects.ts
#	backend/src/services/learningObjects.ts
#	backend/src/services/learningPaths.ts
#	backend/src/util/apiHelper.ts
#	backend/src/util/envvars.ts
#	package-lock.json

backend/src/config.ts

@@ -1,12 +1,9 @@
-// Can be placed in dotenv but found it redundant
-
-// Import dotenv from "dotenv";
-
-// Load .env file
-// Dotenv.config();
-
 import {EnvVars, getEnvVar} from "./util/envvars";
 
+// API
 export const DWENGO_API_BASE = getEnvVar(EnvVars.LearningContentRepoApiBaseUrl);
-
 export const FALLBACK_LANG = getEnvVar(EnvVars.FallbackLanguage);
+
+// Logging
+export const LOG_LEVEL: string = 'development' === process.env.NODE_ENV ? 'debug' : 'info';
+export const LOKI_HOST: string = process.env.LOKI_HOST || 'http://localhost:3102';