* feat: vendor minio client
* feat: introduce storage package with s3 support
* feat: serve s3 files directly
this saves a lot of bandwith as the files are fetched from the object
store directly
* fix: use explicit local storage in tests
* feat: integrate s3 storage with the main server
* fix: add s3 config to cli tests
* docs: explicitly set values in example config
also adds license header to the storage package
* fix: use better http status code on s3 redirect
HTTP 302 Found is the best fit, as it signifies that the resource
requested was found but not under its presumed URL
307/TemporaryRedirect would mean that this resource is usually located
here, not in this case
303/SeeOther indicates that the redirection does not link to the
requested resource but to another page
* refactor: use context in storage driver interface
* start pulling out + replacing urfave and config
* replace many many instances of config
* move more stuff => viper
* properly remove urfave
* move some flags to root command
* add testrig commands to root
* alias config file keys
* start adding cli parsing tests
* reorder viper init
* remove config path alias
* fmt
* change config file keys to non-nested
* we're more or less in business now
* tidy up the common func
* go fmt
* get tests passing again
* add note about the cliparsing tests
* reorganize
* update docs with changes
* structure cmd dir better
* rename + move some files around
* fix dangling comma
