RCv3, BfV, purge option, some link fixing, updated rev history
incorporated many comments and set to writerOnly the section on Audit Logs and the TOC link to it
releaseNotes12.2014
Reformat docstring
Modify root var in appropriate scope
Add intermediate variable
Merge pull request #822 from rackerlabs/add-bind-root-cleanup

Minor cleanup for `add_bind_root`
better design to move around service_mapping

It is acquired once based on config in beginning of app and passed to
supervisor. Similarly in metrics.py. The knowledge of which config keys
represent service names is there in `get_service_mapping` only
Merge pull request #823 from rackerlabs/rm-Convergence

Remove the Convergence class, because it only wrapped a single value.
Write some with_code helper function tests
Make the tests pass
with_code -> has_code in tests
Make the tests pass
Improve docstring
Empty line after docstring (lint)
legit service mapping - thanks @lvh
Import check_response in tests
Merge pull request #832 from rackerlabs/response-pred

Add a with_code response predicate
Some semblance of a test
Some semblance of a function