tests: conversion of formats
server: setup logging in create_app; so it's setup for celeryd too
server: ebook ranking based on popularity & quality
ui: foundation v5.4.4
server: error handling in load_ebook
server: manage.py lb command accepts file_hash now
server: ensure ebook is uploaded before conversion
server: show_s3 command to print uploads on CLI
server: stats and badges for dedrm
client: handle mixed ASIN tags
client: --use-cache param to override cache skip caused by --debug
fixup! 23ba58bdfe96210c678b9def5017694920f9c288