security imporvements
Removed StorefrontInfo and arranged code in 'data'
Merge branch 'master' of github.com:soomla/android-store

* 'master' of github.com:soomla/android-store:
  revert removing of setExternalContext
  Add Githalytics pixel

Conflicts:
	SoomlaAndroidStore/src/com/soomla/store/SoomlaApp.java
removed debugging flag
Merge pull request #29 from Andargor/master

Thanks!

That was VERY important.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	SoomlaAndroidStore/src/com/soomla/store/data/StoreInfo.java