Creating a generic way to import any content from other source.

#243
![screenshot from 2013-10-07 11 37 11](https://f.cloud.github.com/assets/1222368/1278995/da8673dc-2f2b-11e3-89bb-ebd09946288e.png)
![imprting rss](https://f.cloud.github.com/assets/1222368/1278998/f403d89a-2f2b-11e3-91f7-a0c8764e3fba.png)
![importing csv](https://f.cloud.github.com/assets/1222368/1279007/097caeb8-2f2c-11e3-9611-ea2234c8619d.png)