templates can be overridden

For example - removing nav bar, loading screen and the overlays:
`templates.overlay="false" templates.nav-bar="false" templates.loading-screen="false"`

Viewer/src/configuration/configuration.ts

@@ -257,5 +257,5 @@ export interface IImageProcessingConfiguration {
     vignetteBlendMode?: number;
     vignetteM?: boolean;
     applyByPostProcess?: boolean;
-
+    isEnabled?: boolean;
 }

Viewer/src/templateManager.ts

@@ -125,6 +125,7 @@ export class TemplateManager {
             let templateStructure = {};
             // now iterate through all templates and check for children:
             let buildTree = (parentObject, name) => {
+                this.templates[name].isInHtmlTree = true;
                 let childNodes = this.templates[name].getChildElements().filter(n => !!this.templates[n]);
                 childNodes.forEach(element => {
                     parentObject[element] = {};
@@ -149,7 +150,7 @@ export class TemplateManager {
 
     private checkLoadedState() {
         let done = Object.keys(this.templates).length === 0 || Object.keys(this.templates).every((key) => {
-            return this.templates[key].isLoaded && !!this.templates[key].parent;
+            return (this.templates[key].isLoaded && !!this.templates[key].parent) || !this.templates[key].isInHtmlTree;
         });
 
         if (done) {
@@ -205,6 +206,8 @@ export class Template {
      */
     public isShown: boolean;
 
+    public isInHtmlTree: boolean;
+
     public parent: HTMLElement;
 
     public initPromise: Promise<Template>;
@@ -225,6 +228,7 @@ export class Template {
 
         this.isLoaded = false;
         this.isShown = false;
+        this.isInHtmlTree = false;
         /*
         if (configuration.id) {
             this.parent.id = configuration.id;
@@ -361,7 +365,7 @@ export class Template {
     private getTemplateAsHtml(templateConfig: ITemplateConfiguration): Promise<string> {
         if (!templateConfig) {
             return Promise.reject('No templateConfig provided');
-        } else if (templateConfig.html) {
+        } else if (templateConfig.html !== undefined) {
             return Promise.resolve(templateConfig.html);
         } else {
             let location = getTemplateLocation(templateConfig);

Viewer/src/viewer/defaultViewer.ts

@@ -260,7 +260,7 @@ export class DefaultViewer extends AbstractViewer {
 
     public showOverlayScreen(subScreen: string) {
         let template = this.templateManager.getTemplate('overlay');
-        if (!template) return Promise.reject('Overlay template not found');
+        if (!template) return Promise.resolve('Overlay template not found');
 
         return template.show((template => {
 
@@ -285,7 +285,7 @@ export class DefaultViewer extends AbstractViewer {
 
     public hideOverlayScreen() {
         let template = this.templateManager.getTemplate('overlay');
-        if (!template) return Promise.reject('Overlay template not found');
+        if (!template) return Promise.resolve('Overlay template not found');
 
         return template.hide((template => {
             template.parent.style.opacity = "0";
@@ -313,7 +313,7 @@ export class DefaultViewer extends AbstractViewer {
 
     public showLoadingScreen() {
         let template = this.templateManager.getTemplate('loadingScreen');
-        if (!template) return Promise.reject('oading Screen template not found');
+        if (!template) return Promise.resolve('Loading Screen template not found');
 
         return template.show((template => {
 
@@ -332,7 +332,7 @@ export class DefaultViewer extends AbstractViewer {
 
     public hideLoadingScreen() {
         let template = this.templateManager.getTemplate('loadingScreen');
-        if (!template) return Promise.reject('oading Screen template not found');
+        if (!template) return Promise.resolve('Loading Screen template not found');
 
         return template.hide((template => {
             template.parent.style.opacity = "0";
@@ -347,7 +347,6 @@ export class DefaultViewer extends AbstractViewer {
 
     protected configureLights(lightsConfiguration: { [name: string]: ILightConfiguration | boolean } = {}, focusMeshes: Array<AbstractMesh> = this.scene.meshes) {
         super.configureLights(lightsConfiguration, focusMeshes);
-        console.log("flashlight", this.configuration.lab);
         // labs feature - flashlight
         if (this.configuration.lab && this.configuration.lab.flashlight) {
             let pointerPosition = BABYLON.Vector3.Zero();

Viewer/src/viewer/viewer.ts

@@ -600,10 +600,8 @@ export abstract class AbstractViewer {
 
             if (unitSize) {
                 meshesToNormalize.forEach(mesh => {
-                    console.log(mesh.scaling.x)
                     mesh.normalizeToUnitCube(true);
                     mesh.computeWorldMatrix(true);
-                    console.log(mesh.scaling.x)
                 });
             }
             if (center) {