Removed background-width field, since it's auto-calculated

-- Also updated iandoug's Programmer's Keyboard sample

kb.html

@@ -564,19 +564,6 @@ Nav Bar / Header
           </div>
         </div>
 
-        <!-- Keyboard background image width-->
-        <div class="form-group form-group-sm">
-          <label class="control-label col-md-2 col-lg-1 text-nowrap" for="kbdbackgroundimagewidtheditor">Case Width:</label>
-
-          <div class="col-md-1 col-lg-1 form-outdent hint--top hint--rounded"
-               data-hint="Specify the width for the background image for this keyboard layout.">
-            <input id="kbdbackgroundimagewidtheditor" class="form-control input-sm" type='number'  min="1" max="2000" step="1"
-                   ng-model="meta.backgroundimagewidth"
-                   ng-change="updateMeta('backgroundimagewidth')"
-                   ng-blur="validateMeta('backgroundimagewidth')">
-          </div>
-        </div>
-
         <!-- Keyboard background image corners radii-->
         <div class="form-group form-group-sm">
           <label class="control-label col-md-2 col-lg-1 text-nowrap" for="kbdbackgroundradii">Case Radii:</label>

samples/pkb.json

@@ -2,8 +2,10 @@
   {
     "name": "Programmer's Keyboard 1.90",
     "author": "Ian Douglas",
-    "backgroundimage": "bg/wood/Red_Mahogany_Wood.jpg",
-    "backgroundimagewidth": 1300,
+    "background": { 
+      "name": "Mahogany Red", 
+      "style" : "background-image: url('/bg/wood/Red_Mahogany_Wood.jpg');" 
+    },
     "backgroundradii": "30px 30px 50% 50%",
     "defaultkeyswitchstyle": "CherryMX",
     "defaultkeyswitchbrand": "Cherry",