Added JS function to disable the continue button until all required shipping/billing fields are filling in.  I am still working on it.

Signed-off-by: Dom Pascal <dom@dompascal.com>
Merge branch 'master' of github.com:blackandblack/tide-and-pool
Reverted Facebook button on product view to a Facebook like button with counter.

Signed-off-by: Dom Pascal <dom@dompascal.com>