Adding current language to network dropdown links

fixes  #1094

frontend/src/app/components/master-page/master-page.component.ts

@@ -1,6 +1,7 @@
 import { Component, OnInit } from '@angular/core';
 import { Env, StateService } from '../../services/state.service';
 import { Observable, merge, of } from 'rxjs';
+import { LanguageService } from 'src/app/services/language.service';
 
 @Component({
   selector: 'app-master-page',
@@ -14,15 +15,18 @@ export class MasterPageComponent implements OnInit {
   navCollapsed = false;
   isMobile = window.innerWidth <= 767.98;
   officialMempoolSpace = this.stateService.env.OFFICIAL_MEMPOOL_SPACE;
+  urlLanguage: string;
 
   constructor(
     private stateService: StateService,
+    private languageService: LanguageService,
   ) { }
 
   ngOnInit() {
     this.env = this.stateService.env;
     this.connectionState$ = this.stateService.connectionState$;
     this.network$ = merge(of(''), this.stateService.networkChanged$);
+    this.urlLanguage = this.languageService.getLanguageForUrl();
   }
 
   collapse(): void {