Tab placement documentation (#5861)
Tab placement documentation (#5861)

Fixes #1822
stevetayloruk/Orchard2,OrchardCMS/Brochard,OrchardCMS/Brochard,petedavis/Orchard2,stevetayloruk/Orchard2,OrchardCMS/Brochard,xkproject/Orchard2,stevetayloruk/Orchard2,stevetayloruk/Orchard2,petedavis/Orchard2,petedavis/Orchard2,stevetayloruk/Orchard2,xkproject/Orchard2,xkproject/Orchard2,xkproject/Orchard2,petedavis/Orchard2,xkproject/Orchard2