[WIP] Adds in a temporary save solution

**Current Problems:**
* I made it in 30 mins with no internet :D Please _scrutinise_ it.

Content is now saved to specific temp post value, so each post can have temp content. The 'new post' screen is classed as "new". 

Example Localstorage output;
```
Object { 1="This short guide will t...[1]: http://nodejs.org/", new=":D"}
```

http://cl.ly/RJ7B