adds a landing page which gives an overview of the tool

- landing page shows two images of google calendar and tizen watch
  and how the calendars corelate
- routes redesigned to fit this landing page
- redesign of coloring in css

server/template/login.html

@@ -2,6 +2,8 @@
 
 {% block content %}
 
+{% include "base_navigation.html" %}
+
 <div class="banner">
     <h1 class="title">Longitude</h1>
     <h5> A calendar watchface</h5>