Improvements

Hi,

Please review the changes

1). Added font awesome icons
2). Added shortcode name attribute both in panel and post editor shortcode
3). Fixed Column block: prevent self as child block  #148 , #96

![aqpb_mod](https://cloud.githubusercontent.com/assets/2570362/3649657/6e4d4850-1114-11e4-87ac-bcd99dbbc99b.jpeg)


IDEA:
1). Open block controls in popup modal. I've an old modified version of AQPB in which I've implemented modal block controls.
(If this is allowed I'll work on pull request without changing the original builder skin)

![block-modal](https://cloud.githubusercontent.com/assets/2570362/3649792/c736918c-1115-11e4-9881-9a6c85afda31.jpeg)
![modal_popup](https://cloud.githubusercontent.com/assets/2570362/3649793/c8abcaa0-1115-11e4-85dc-6fe2670b3ed2.jpeg)

Thanks