* Moved RFCs model into idtracker
* Switched idtracker querys to use idinternal
* Created idinternal.document which returns either an InternetDraft or
an Rfc depending on the value of rfc_flag
* Create compatability methods in InternetDraft and Rfc models
to be able to use certain attributes in the template without
worring about where they come from.
Ticket #59 has a list of remaining bits.
- Legacy-Id: 98
