Add @surveys instance variable to RegistrationsController#update
Redirect `/datasets` to `/dashboard`
Merge pull request #447 from theodi/bugfix-446-fix-errors-on-user-update

Fix errors on user update and when accessing /datasets
Merge branch 'master' of github.com:theodi/open-data-certificate into feature-change-badge-code
Remove `meta_map` from surveys
Added a bit of documentation about changing surveys
Remove migration that assigns meta maps
Assign default values to `meta_map` hash if not present