Silence periodic console messages from Review Cache
Silences the periodic console messages that the Review Cache would trigger whenever fetch_new_reviews is called with disable_popup set to true.
Also updated the version referenced inside the script.
Fixed typo
Made silent a session variable.
window.review_cache.silent (default: true) is now a configurable variable that persists until page refresh.
wkof.Progress.popup_delay(delay, silent) checks silent !== true, so the forced boolean coercion here is for clarity rather than necessity.
Merge pull request #16 from bashenk/patch-review-cache-console
Silence periodic console messages from Review Cache
