Write some basic regression tests

[rosnfeld]

As the app gets larger/more complicated manual testing is starting to be a pain, and you've skipped some use-cases that have then broken (e.g. CSV export).

A few basic "acceptance" tests could be useful, now that the app is settling down:

• make a basic query
• classify some query results
• amend some already-analyzed results
• export CSV

[rosnfeld]

Also:

• Empty query
• Query with no results

[rosnfeld]

You may need to do these in a Selenium-type framework as there is a fair bit of JavaScript/AJAX going on. But perhaps you can do simple Django tests to start.