fix(SebmGoogleMapInfoWindow): zIndex and maxWidth

Fixes #651
Closes #656

Author: sebholstein

src/core/directives/google-map-info-window.ts

@@ -37,7 +37,7 @@ let infoWindowId = 0;
  */
 @Component({
   selector: 'sebm-google-map-info-window',
-  inputs: ['latitude', 'longitude', 'disableAutoPan', 'isOpen'],
+  inputs: ['latitude', 'longitude', 'disableAutoPan', 'isOpen', 'zIndex', 'maxWidth'],
   outputs: ['infoWindowClose'],
   template: `<div class='sebm-google-map-info-window-content'>
       <ng-content></ng-content>

src/core/services/managers/info-window-manager.ts

@@ -63,6 +63,8 @@ export class InfoWindowManager {
   addInfoWindow(infoWindow: SebmGoogleMapInfoWindow) {
     const options: InfoWindowOptions = {
       content: infoWindow.content,
+      maxWidth: infoWindow.maxWidth,
+      zIndex: infoWindow.zIndex,
     };
     if (typeof infoWindow.latitude === 'number' && typeof infoWindow.longitude === 'number') {
       options.position = {lat: infoWindow.latitude, lng: infoWindow.longitude};