changed dev environment to localhost

angular.json

@@ -65,7 +65,13 @@
               "vendorChunk": true,
               "extractLicenses": false,
               "sourceMap": true,
-              "namedChunks": true
+              "namedChunks": true,
+              "fileReplacements": [
+                {
+                  "replace": "src/environments/environment.ts",
+                  "with": "src/environments/environment.dev.ts"
+                }
+              ]
             }
           }
         },

src/environments/environment.dev.ts

@@ -6,7 +6,7 @@
 
 export const environment = {
   production: false,
-  apiUrl: 'https://oneup-02.cs.uni-potsdam.de/',
+  apiUrl: 'http://localhost:8000/',
 };
 
 import 'zone.js/dist/zone-error'; // Included with Angular CLI.
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