Added Flask skeleton from mhvdb2

See added files.
Server runs with basic skeleton.
Added script to download the arts list and save to json file.
Fixing flake8 errors
Fixed runtests.py
Added new line to fix flake.
Added missing tests
updated .gitignore and deleted test.db
Merge pull request #34 from jamiereid/flask-skeleton

Added Flask skeleton from mhvdb2
Updated CONTRIBUTING w/ python/Flask information
Merge pull request #39 from jamiereid/contributing-update

Updated CONTRIBUTING w/ python/Flask information
Fixes to download script.
Merge pull request #37 from PrototypeDino/initial-script

Added script to download the arts list and save to json file. - merged, thanks