New transitional homepage to investments

It close #517, close #518, close #526 and close #527.

## Desktop

![all_home](https://cloud.githubusercontent.com/assets/230476/3933594/6ac1afca-2481-11e4-9db0-5c442bb613a2.png)

![invest-logged](https://cloud.githubusercontent.com/assets/230476/3933607/8faa41da-2481-11e4-8bba-b077cdcfd8bf.png)

![invest-thanks](https://cloud.githubusercontent.com/assets/230476/3933621/c8c7fdb8-2481-11e4-950e-68634d4065e7.png)

# Mobile

![screen shot 2014-08-15 at 10 40 03 am](https://cloud.githubusercontent.com/assets/230476/3933649/220b1874-2482-11e4-9ad5-af17c7fcef38.png)
![screen shot 2014-08-15 at 10 41 09 am](https://cloud.githubusercontent.com/assets/230476/3933647/22056aa0-2482-11e4-965e-8988e9fd7d23.png)
![screen shot 2014-08-15 at 10 41 30 am](https://cloud.githubusercontent.com/assets/230476/3933645/21ff1c40-2482-11e4-84b3-1ae07d2562bf.png)
![screen shot 2014-08-15 at 10 41 42 am](https://cloud.githubusercontent.com/assets/230476/3933646/2202c444-2482-11e4-8a4c-7912e7931d6e.png)
![screen shot 2014-08-15 at 10 42 35 am](https://cloud.githubusercontent.com/assets/230476/3933648/220b0af0-2482-11e4-95a7-cede3422c3da.png)