Fix angular proxy (#4)

Author: Matthbo

src/main/frontend/src/proxy.conf.json

@@ -1,8 +1,7 @@
 {
   "/api": {
-    "target": "http://localhost:8080/api/",
+    "target": "http://localhost:8080/",
     "secure": false,
-    "changeOrigin": true,
     "ws": true
   }
 }