Clear local storage data upon new version of AS

#### To test:
 - npm install
 - grunt build
 - Run your web app with recently compiled version of AS and make sure that local storage has new  AS_version key that matches with its compiled version from package.json. 
@maxicecilia  I haven't set it manually, it went automatically. So like this is the first commit for 0.1.10.
Grunt build did the magic here.