improve copy, content and layout of home page and notes/new

This feature changes the content, copy, and layout of the home page and notes/new

**home page**
![screen shot 2013-11-20 at 10 45 18 am](https://f.cloud.github.com/assets/331004/1583228/cc841130-51fa-11e3-9900-0f625956bb00.png)

**notes/new**
![screen shot 2013-11-20 at 10 46 45 am](https://f.cloud.github.com/assets/331004/1583247/fc74a5f8-51fa-11e3-9395-289346e41d19.png)