add Procfile
rename dependencies.txt to requirements.txt as recognised by Heroku-like services
add lxml requirements, learnt from a clean install on ubuntu14.04
Add multisource config object
replace separate config file reading (cache, statistic, main) with our config object and DI
move config storage from lower- to uppercase inspired by env vars, change repr output to env-var-like
move database name to MONGO_URI conf var
add python runtime.txt
remove runtime, caused error
print config on start
add notes for running on dokku