added sloan magnitudes
removed unnecessary parens
added tails to lowercase case objects, added to 'all' list
fixed brightness parser test
Merge pull request #175 from tpolecat/sloan

OCSADV-203 SLOAN passbands that GMOS and SDSS
OCSADV-27 Parse VoTable magnitude errors and test #time 20m
OCSADV-27 Support parsing IR bands #time 20m
OCSADV-27 Fields are not good unique identifiers of table entries, use UCDs instead
OCSADV-27 Convert parallax and rv on ProperMotion to Option #time 20m
OCSADV-27 Added support to parse ProperMotion from votable #time 3h
OCSADV-27 Ignore a special case when ucac4 returns a magnitude without a defined band, with ucd phot.mag;em.opt #time 30m