MOBILE-2741 style: Style icons coming from web

src/app/app.scss

@@ -376,6 +376,17 @@ ion-app.app-root {
     }
 
     @include core-headings();
+
+    img.icon {
+      font-size: 16px;
+      width: 16px;
+      height: 16px;
+      margin: 0;
+      padding: 0;
+      -webkit-box-sizing: content-box;
+      box-sizing: content-box;
+      margin-right: .5rem;
+    }
   }
 
   .item core-format-text {

src/directives/format-text.ts

@@ -382,7 +382,7 @@ export class CoreFormatTextDirective implements OnChanges {
                 images.forEach((img: HTMLElement) => {
                     this.addMediaAdaptClass(img);
                     this.addExternalContent(img);
-                    if (this.utils.isTrueOrOne(this.adaptImg)) {
+                    if (this.utils.isTrueOrOne(this.adaptImg) && !img.classList.contains('icon')) {
                         this.adaptImage(elWidth, img);
                     }
                 });