fixes avatar directive missing photo (#275)

src/app/avatar/avatar.directive.ts

@@ -3,6 +3,9 @@ import _ from 'lodash';
 import { BackendAPIService } from '../backend-api.service';
 import { GlobalVarsService } from '../global-vars.service';
 
+const DEFAULT_PROFILE_PIC_URL =
+  window.location.origin + '/assets/placeholder-account-image.png';
+
 @Directive({
   selector: '[appAvatar]',
 })
@@ -21,20 +24,17 @@ export class AvatarDirective implements OnChanges {
     }
 
     if (!this.appAvatar) {
-      this.setURLOnElement(
-        this.backendApi.GetDefaultProfilePictureURL(window.location.host)
-      );
+      this.setURLOnElement(DEFAULT_PROFILE_PIC_URL);
       return;
     }
-    // The fallback route is the route to the pic we use if we can't find an avatar for the user.
-    const fallbackRoute = `fallback=${this.backendApi.GetDefaultProfilePictureURL(
-      window.location.host
-    )}`;
 
     // Although it would be hard for an attacker to inject a malformed public key into the app,
     // we do a basic _.escape anyways just to be extra safe.
     const profPicURL = _.escape(
-      this.backendApi.GetSingleProfilePictureURL(this.appAvatar, fallbackRoute)
+      this.backendApi.GetSingleProfilePictureURL(
+        this.appAvatar,
+        DEFAULT_PROFILE_PIC_URL
+      )
     );
 
     // Set the URL on the element.

src/app/backend-api.service.ts

@@ -385,10 +385,6 @@ export class BackendAPIService {
     )}/${PublicKeyBase58Check}?fallback=${FallbackURL}`;
   }
 
-  GetDefaultProfilePictureURL(defaultImgHost: string): string {
-    return defaultImgHost + '/assets/img/default_profile_pic.png';
-  }
-
   JumioBegin(
     PublicKey: string,
     ReferralHashBase58: string,