Gliese 581 f is likely an artifact of stellar activity, not found in activity-corrected orbital solution.

Robertson et al. (2013) http://adsabs.harvard.edu/abs/2013ApJ...764....3R
Robertson et al. (2014) http://adsabs.harvard.edu/abs/2014arXiv1407.1049R
Orbital elements of proposed planets exhibit strong dynamical instability.

Horner et al. (2014) http://cdsads.u-strasbg.fr/abs/2014MNRAS.439.1176H
Proposed system is extremely unstable.
Wittenmyer et al. (2013) http://cdsads.u-strasbg.fr/abs/2013MNRAS.431.2150W
HARPS measurements do not see the planet, or find different orbital elements suggesting the planet is not real.

Anglada-Escudé & Butler (2012) http://adsabs.harvard.edu/abs/2012ApJS..200...15A
Zechmeister et al. (2013) http://adsabs.harvard.edu/abs/2013A%26A...552A..78Z
Current data are inconsistent with a single planet model and insufficient to constrain a multiplanet solution.

Schwope & Thinius (2014) http://adsabs.harvard.edu/abs/2014arXiv1403.4160S
Orbital solution of Beuermann et al. (2012) questioned over whether data actually supports unconstrained outer period.

Horner et al. (2012) http://adsabs.harvard.edu/abs/2012MNRAS.427.2812H
Analysis taking into account red noise finds evidence for only 2 planets.

Feroz & Hobson (2014) http://adsabs.harvard.edu/abs/2014MNRAS.437.3540F
Companion is a 50 Jupiter masses brown dwarf.

Hinkley et al. (2013) http://cdsads.u-strasbg.fr/abs/2013ApJ...779..153H
Asterodensity profiling suggests this candidate is a false positive.

Sliski & Kipping (2014) http://cdsads.u-strasbg.fr/abs/2014ApJ...788..148S
Readded Kappa Andromedae as 'controversial' due to very high mass.
Merge branch 'mistertribs-disproven'
Update oec.xsd
Merge pull request #301 from Sol-d/patch-3

separtion now allowed as multiple tag