Initial version of backend and extension.
Clean up backend code (per lint and style guide).

Add docstrings to backend code.

Uncomment access control code for getSurveys.
Added blurb to README.md about the repo.
Remove webapp2 library include from app config.
Simplify API method names.

Remove webapp2 library include.
Start adding more to install-time code for extension.

Add .gitignore for *.pyc files.
Remove extension from this feature-branch
Remove data-export functions
Move message classes to separate file.

Simplify conversion between messages and models.

Lint fixes.
Update README.md to hard break at 80char
Merge pull request #1 from christhompson/backend-submission

Backend survey submission