Use ng-metadata as a Backport of Angular 2+ API (#2486)

* starting UtilService refactor

* pre find-replace angular.module('quay') => angular.module('QuayModule')

* successfully switched to ng-metadata for backported Angular2 API

* working with parent component reference in child

* fixing @Output to use EventEmitter

* fixed @Output events for custom git trigger

* more fixes

* refactored QuayPages module for backwards-compatibility

* reinitialized test.db

* use minified libraries

* replaced references for angular-ts-decorators

* fixed ng-show

static/js/services/avatar/avatar.service.impl.ts

@@ -1,5 +1,5 @@
 import { AvatarService } from './avatar.service';
-import { Injectable } from 'angular-ts-decorators';
+import { Injectable, Inject } from 'ng-metadata/core';
 
 
 @Injectable(AvatarService.name)
@@ -7,7 +7,8 @@ export class AvatarServiceImpl implements AvatarService {
 
   private cache: {[cacheKey: string]: string} = {};
 
-  constructor(private Config: any, private md5: any) {
+  constructor(@Inject('Config') private Config: any,
+              @Inject('md5') private md5: any) {
 
   }