HGKeeper

affc85fd4f3a

Create PurpleProtocolWhiteboard and remove PurpleProtocolFactory

Testing Done:
Compiled

Reviewed at https://reviews.imfreedom.org/r/1809/

For information on translating Pidgin, libpurple, and Finch, please see

our tranlsation page at https://pidgin.im/development/i18n/