GagBook update to v0.5!

* Fix sudden not working (since 2/4/2013) because of some changes in the HTML of 9GAG website (like the previous post)
* Image caching - all images will be downloaded to the cache initially and will load from the cache when viewing the image
* Add data counter - just an estimation of how much data is downloaded in the current session. Go to about page to view it.
* Redesign UI - the whole UI is redesign with vertical scrolling

Download: bit.ly/gagbook-harmattan-050