check total episodes

created function that calls a website to see how many episodes there is
fixed typeof string error

fixed typeof string error and added the check for episodes after it
finishs checking for new eps.
link to animenewsnetwork

added link to animenewsnetwork for Terms of Service
fix check for new eps

added a "new" || "done string for the episode depending on info from
API. Fix else case if it didn't meet conditions for if statement. Add
Links to Extension Website.