[Frontend] Add number input

Fixes #1628
Add template and bundle info for numberfield;
Styling in general and toolbar contexts;

platform/forms/bundle.js

@@ -32,6 +32,7 @@ define([
     "text!./res/templates/controls/datetime.html",
     "text!./res/templates/controls/select.html",
     "text!./res/templates/controls/textfield.html",
+    "text!./res/templates/controls/numberfield.html",
     "text!./res/templates/controls/textarea.html",
     "text!./res/templates/controls/button.html",
     "text!./res/templates/controls/color.html",
@@ -52,6 +53,7 @@ define([
     datetimeTemplate,
     selectTemplate,
     textfieldTemplate,
+    numberfieldTemplate,
     textareaTemplate,
     buttonTemplate,
     colorTemplate,
@@ -105,6 +107,10 @@ define([
                     "key": "textfield",
                     "template": textfieldTemplate
                 },
+                {
+                    "key": "numberfield",
+                    "template": numberfieldTemplate
+                },
                 {
                     "key": "textarea",
                     "template": textareaTemplate