Create install flow

* Refactor options.js into a view
* Break up install flow into a series of screens
* Remove bootstrap
* Make installer window static size, mostly to facilitate positioning

// FREEBIE

js/chromium.js

@@ -165,7 +165,9 @@
             extension.windows.open({
                 id: id,
                 url: url,
-                bounds: { width: 800, height: 666 }
+                bounds: { width: 800, height: 666, },
+                minWidth: 800,
+                minHeight: 666
             });
         }
     };