add templates for plugins: Google gauge and multiline charts

app/views/plugins/templates/gauge.html

@@ -0,0 +1,19 @@
+<html>
+  <head>
+
+  <title>Google Gauge - ThingSpeak</title>
+
+  %%PLUGIN_CSS%%
+  %%PLUGIN_JAVASCRIPT%%
+
+  </head>
+
+  <body>
+    <div id="container">
+      <div id="inner">
+        <div id="gauge_div"></div>
+      </div>
+    </div>
+  </body>
+</html>
+