spatial searches are now saved and shown in history

Closes #151 

#### Before
![screen shot 2014-11-21 at 12 04 44 pm](https://cloud.githubusercontent.com/assets/1656824/5148728/a735316a-7176-11e4-8b5b-010d2e3dac1a.png)

#### After
![screen shot 2014-11-21 at 12 04 24 pm](https://cloud.githubusercontent.com/assets/1656824/5148722/a00876cc-7176-11e4-9c18-aec66d8a954a.png)