Implement editing qualifications (#20)

Co-authored-by: Phan Huy Tran <p.tran@neusta.de>
Reviewed-on: #20
Reviewed-by: Constantin Simonis <constantin@simonis.lol>

src/app/services/qualification.service.ts

@@ -1,7 +1,6 @@
 import {inject, Injectable} from "@angular/core";
 import {HttpClient} from "@angular/common/http";
-import {Observable} from "rxjs";
-import {Employee} from "../Employee";
+import {map, Observable} from "rxjs";
 import {Qualification} from "../Qualification";
 
 
@@ -14,10 +13,16 @@ export default class QualificationService {
   private static readonly BASE_URL = 'http://localhost:8089';
 
   public getAll(): Observable<Qualification[]> {
-    return this.http.get<Qualification[]>(`${QualificationService.BASE_URL}/qualifications`)
+    return this.http.get<Qualification[]>(`${QualificationService.BASE_URL}/qualifications`).pipe(
+        map(qualifications => qualifications.sort((a, b) => a.id - b.id))
+    )
   }
 
   public create(data: any) {
     return this.http.post(`${QualificationService.BASE_URL}/qualifications`, data)
   }
+
+  public edit(id: number, data: any) {
+    return this.http.put(`${QualificationService.BASE_URL}/qualifications/${id}`, data)
+  }
 }