softer constraint on libpq version
Drop some legacy from Usermeta f-me/carma#1462
Fix legacy remainings in Partner.hs f-me/carma#2118
Update Usermeta.hs
Update carma-models.cabal
Add Data.Model.Patch.delete (f-me/carma@90f87e7)
Patch.Sql.read throws explicitly now f-me/carma#2117
Merge branch 'master' into ghc-7.8

Conflicts:
	carma-models.cabal