Implemented action menu that makes available all actions.

No more painfully going through the options to find out what you can even do! Just open the action menu(needs to be bound first through the options, heh) and browse at your leisure.

![actionmenu](https://cloud.githubusercontent.com/assets/902211/2622001/4cc483ea-bc84-11e3-8872-65e6a208d123.png)
![actionmenu_interact](https://cloud.githubusercontent.com/assets/902211/2622000/4a260ab4-bc84-11e3-85cc-6e67cd78ddfe.png)