Reimplement the RUSA ACP controle time calculator with flask and ajax

That's "controle" with an 'e', because it's French, although "control" is also accepted. Controls are points where a rider must obtain proof of passage, and control[e] times are the minimum and maximum times by which the rider must arrive at the location.

The algorithm for calculating controle times is described at http://www.rusa.org/octime_alg.html . The description is ambiguous, but the examples help. Part of finishing this project is clarifying anything that is not clear about the requirements, and documenting it clearly.

We are essentially replacing the calculator at http://www.rusa.org/octime_acp.html . We can also use that calculator to clarify requirements.

The current RUSA controle time calculator is a Perl script that takes an HTML form and emits a text page. The reimplementation will fill in times as the input fields are filled. Each time a distance is filled in, the corresponding open and close times should be filled in. If no begin time has been provided, use 0:00 as the begin time.

I will leave much of the design to you.

A requirement of this project will be designing a systematic test suite.