Add csv validation

[qedi-r]

We should be able to validate CSV input files in the scripts/travis_test ruby script.

If we want, we can break this out into a separate script that will be called by Kernel#system to keep as much of the script codebase in Python as possible.

[qedi-r]

Things we should validate:

• line endings
• correct number of csv rows
• ward names
• spelling, on appropriate fields (eg titles)