Separate list for accepted and proposed terms in the documentation

[coolharsh55]

The current format has both accepted and proposed terms in the same listing of tables. Instead, list the proposed terms separately, perhaps under a heading proposed within the documentation. This will help indicate more clearly that the terms are not stable and advice caution when using.

This can be implemented by creating a separate heading in template_dpv.jinja2 and filtering accepted/proposed classes in the for loop using the sw:term_status value.