added navigation drawer

![29539_477422112369193_1207006359_n](https://f.cloud.github.com/assets/3042610/1852222/e39d804c-76f6-11e3-8c93-d6eb8fcc2ac1.jpg)

problems: 
- item 1 does not yet link to the map
-- if view is switched you cant go back to map ....
:+1: