optimize and clean up GridView
fixed bug in ActiveRecord where ::form throwing exception
Major revision 6.6

Added base object
Changed GridViewControls to support footers
Changed GridViewButton constructor order
Changed ActiveRecordBase::form()
- no longer includes submit button
- no longer includes fieldset legend
Added ActiveRecordBase::gridview()
- returns editable Gridview with filters based on model
Update version to 6.6