Reload "Settings" form on save (fixes #895)
Reload "Settings" form on save (fixes #895)

Regression from 920da0d1202ec403c193a0b282f5379bc415c287

dhensby/silverstripe-cms,jonom/silverstripe-cms,dhensby/silverstripe-cms,silverstripe/silverstripe-siteconfig,silverstripe/silverstripe-cms,silverstripe/silverstripe-cms,silverstripe-labs/silverstripe-reports,silverstripe-labs/silverstripe-reports,jonom/silverstripe-cms,helpfulrobot/i-lateral-silverstripe-siteconfig,dhensby/silverstripe-reports,dhensby/silverstripe-reports,dhensby/silverstripe-cms