Refactor API URLs to use GlobalConstants and update CORS configurations for production

jambotron-ui/src/environments/environment.development.ts

@@ -1,3 +1,7 @@
 export const environment = {
-  default_page: 'main/generate-image'
+  default_page: 'main/generate-image',
+  port: 8080,
+  fromWeb: false,
+  production: false,
+  host_name: 'http://localhost',
 };

jambotron-ui/src/environments/environment.prod.ts

@@ -0,0 +1,7 @@
+export const environment = {
+  default_page: 'main/generate-image',
+  port: 8081,
+  production: true,
+  fromWeb: true,
+  host_name: 'https://jambotron.run.place'
+};

jambotron-ui/src/environments/environment.ts

@@ -1,3 +1,7 @@
 export const environment = {
-  default_page: 'main/generate-image'
+  default_page: 'main/generate-image',
+  port: 8080,
+  production: true,
+  fromWeb: false,
+  host_name: 'http://localhost'
 };