pidgin/pidgin

Python2 is deprecated and not in current distros so move the dbus bindings to Python3

Testing Done:
Ran locally, everything _looks_ fine.

Reviewed at https://reviews.imfreedom.org/r/550/
VOID:POINTER,POINTER,OBJECT
BOOLEAN:OBJECT,POINTER,STRING
VOID:STRING,STRING
VOID:STRING,STRING,DOUBLE
VOID:ENUM,STRING,STRING
VOID:ENUM,STRING,STRING,BOOLEAN
VOID:FLAGS,FLAGS
VOID:STRING,STRING,OBJECT,OBJECT
VOID:POINTER,POINTER,OBJECT,OBJECT
VOID:STRING,STRING,POINTER