First attempt at a fix for libraries issue
Add ManagementUtility which sets up remote/local context given the --context arg.
Rename 'context' to 'sandbox', simplify interface, docs.
Add a fixed test command, make monkeypatching safer.

- Restore the 'test' command which falls back to the previous app's command, whatever that is.
- Apply test monkeypatches only when running our test command, and only when using a DB backend which requires it.
- This fixes the behavior of the --settings flag in manage.py, which was broken by the previous
  method of monkeypatching.
Don't import from Django until inside a sandbox which has updated sys.path for builtin libs.
Merge branch 'master' into libs-incorrect-in-manage
Teardown api proxies when exiting the remote sandbox
README formatting, document manage.py, update setup instructions.

- Documentation for --sandbox argumrnt for manage.py.
- Remove documentation for optional path setup over which we have no control.
- Remove mentions of 'remote' command.
Line breaks in TODO.md
Deploy command not on the roadmap - use appcfg update as normal
Remove boot.py - users should use djangae.core.management instead.
Oh yeah, 'see' isn't a good name for a link. :D
Only add the SDK to sys.path if it is not already importable