Adding sidebar menu

WIP, need to be responsified and all

![screen shot 2014-08-27 at 11 03 12 am](https://cloud.githubusercontent.com/assets/2584073/4061873/78d1da6c-2dfb-11e4-85ca-c50932435003.png)

Use ```com.google.gwt.i18n.server.keygen.MD5KeyGenerator``` instead of that.