fix: hardcoded domain name; <embed> parser; vgoogle fails for if src=(path) and not src=(url)

Notes
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  - Uses still the hardcoded youtube.com domain name which looks to work okay
    with other ones (e.g. br.youtube.com)


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dailymotion: login

(?) Like with yt, log-in is required to watch some of the content
    Some details about the cookies that dailymotion.com sets:

    - dailymotion_auth
      - this appears to be what LOGIN_INFO cookie is for yt
      - holds account name (!)
    - sid
      - ignore (?)
    - RMID
      - ignore (?)
 
