General coverage with unit/integration tests
General coverage with unit/integration tests

This covers the basic unit tests of accessing each site and clicking through
the interface. It also integration tests submitting messages, files, both
messages and files, and journalists replying to a source.

mark-in/securedrop-prov-upstream,mark-in/securedrop-prov-upstream,mark-in/securedrop-prov-upstream,mark-in/securedrop-prov-upstream