Function bibcodeUrl( bibcode )

Description:
Maps a bibcode to the URL that will display the relevant entry in ADS. If the supplied string does not appear to be a bibcode, null will be returned.

If the supplied string appears to be a bibcode, it just prepends the string "https://ui.adsabs.harvard.edu/abs/" and performs any character escaping that is required.

Parameters:
bibcode (String)
ADS-style bibcode string
Return Value (String):
display URL pointing at bibcode record, or null if it doesn't look like a bibcode
Example:
bibcodeUrl("2018A&A...616A...2L") = "https://ui.adsabs.harvard.edu/abs/2018A%26A...616A...2L"
See Also:
http://adsabs.harvard.edu/abs_doc/help_pages/data.html
Signature:
String bibcodeUrl(String)