iOS 6 fix to hide next previous accessory toolbar buttons when previous or next textfield pointers aren't set
Merge pull request #101 from setdirection/issue/ios6-hiding-next-previous-toolbar-buttons-when-there-are-no-pointers-to-next-previous-text-field

iOS 6 fix to hide next previous accessory toolbar buttons when previous ...
Fixed issue with SDDataMap mapping impossible data conversions.  See https://github.com/setdirection/ios-shared/issues/102.
Merge branch 'master' of github.com:setdirection/ios-shared
Merge branch 'master' of github.com:setdirection/ios-shared