Remove type check for url in account request form
Remove type check for url in account request form

It was confusing users.  Now its just free text.  It's just an informational
field so the format doesn't really matter.

GENI-NSF/geni-ar,GENI-NSF/geni-ar,tcmitchell/geni-ar,GENI-NSF/geni-ar,GENI-NSF/geni-ar,charliemeyer/geni-ar,tcmitchell/geni-ar,GENI-NSF/geni-ar,charliemeyer/geni-ar,tcmitchell/geni-ar,charliemeyer/geni-ar,tcmitchell/geni-ar,charliemeyer/geni-ar,tcmitchell/geni-ar,charliemeyer/geni-ar