Added Addressbook
Update config.py
Delete bmwa_config.cfg
Correct formatting: 2 blank lines between function declarations
Add trailing slash for outbox url
Simplify retrieving addressbook addresses.

All must be decoded immediately in order to sort labels alphabetically.
Removed line that does nothing.
Refactor common message decoding instructions.
Correct formatting: tabs and spaces.
Remove incorrect argument from api call.
Fix documentation.
Added SubjectLink to view Message in Outbox