fix http mixed content

Author: Fedor Baart

app/templates/index.html

@@ -9,7 +9,7 @@
         <meta name="description" content="Wonder how Earth's surface water changed during the last 30 years? Aqua Monitor detects these changes in real-time using satellite imagery for any place on Earth." />
 
         <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
-        <script type="text/javascript" src="http://www.google.com/jsapi"></script>
+        <script type="text/javascript" src="https://www.google.com/jsapi"></script>
 
         <script src="static/scripts/chart.js"></script>