refactor: use new backend version (2.x.x)

Close #74

src/environments/environment.prod.ts

@@ -13,8 +13,8 @@
  * this program. If not, see <https://www.gnu.org/licenses/>.
  */
 export const environment = {
-  backend_url: 'http://localhost:3000',
-  backend_version: '1.0.0',
+  backend_url: 'https://mobile.server.uni-frankfurt.de',
+  backend_version: '2.0.0',
   use_fake_backend: false,
   production: true,
 };

src/environments/environment.ts

@@ -17,8 +17,8 @@
 // `ng build --env=prod` then `environment.prod.ts` will be used instead.
 // The list of which env maps to which file can be found in `.angular-cli.json`.
 export const environment = {
-  backend_url: 'http://localhost:3000',
-  backend_version: '1.0.0',
+  backend_url: 'https://mobile.server.uni-frankfurt.de',
+  backend_version: '2.0.0',
   use_fake_backend: false,
   production: false,
 };

src/environments/environment.web.ts

@@ -13,8 +13,8 @@
  * this program. If not, see <https://www.gnu.org/licenses/>.
  */
 export const environment = {
-  backend_url: 'http://localhost:3000',
-  backend_version: '1.0.0',
+  backend_url: 'https://mobile.server.uni-frankfurt.de',
+  backend_version: '2.0.0',
   use_fake_backend: true,
   production: false,
 };