Merge pull request #1 from SchizoDuckie/angular

refresh my fork from schizoduckie:angular
correct window.chrome.app version existence check

('version' in window.chrome.app) returns false on Chrome, but ('version' in window.chrome.app.getDetails()) returns true.
I suspect this is what was intended?
use window consistently, add langKey to statistics
remove setLocal console.log
altered changeLanguage console.log
Merge pull request #177 from garfield69/angular

correct About statistics (is this chrome or webbased) check