Since dataformview::get_default_view_template and dataformview::get_default_entry_template set view attributes rather than return content, set methods seem more appropriate. This amounts to changing method names to dataformview::set_default_view_template and dataformview::set_default_entry_template respectively.

A further adjustment is adding adding a param string (defaults to null) to allow passing an alternate template content.

Finally, changing access level to public to allow setting an laternate template content progrematically.