Removed json config file (issues with CORS) and added localstorage compatibility (data is saved into web browser storage). As localstorage is implemented, the user will be able to configurate it's own settings from a walkthrough menu. Settings can be edited any time from the bottom left letters.
As json config was removed, now this extention can be also built for firefox. Firefox users will need to use the "xpi" file uploaded in this release.