Improve code quality and add comments

frontend/src/app/Services/profile.service.ts

@@ -15,6 +15,7 @@ export class ProfileService {
   ) {}
 
   /**
+   * Function to get all Userdata
    * @returns Observable
    */
   public getUserData(): Observable<any> {
@@ -28,6 +29,7 @@ export class ProfileService {
   }
 
   /**
+   * Function to update user profile
    * @param  {string} username
    * @param  {number} password
    * @returns Observable
@@ -49,6 +51,7 @@ export class ProfileService {
   }
 
   /**
+   * Function to add a telegram id
    * @param  {string} telegramUserID
    * @returns Observable
    */
@@ -68,6 +71,7 @@ export class ProfileService {
   }
 
   /**
+   * Function to add a cron string for automatic updates
    * @param  {string} cronString
    * @returns Observable
    */