Add missing.js test files that requires any files that currently does
not have any unit tests defined for them. This should hopefully make it
so that when unit tests are added for parts of these files the coverage
will increase instead of decreasing.
Note that this does not include CLI Tools/ as those are not testable.
Merge the masterIP and masterPort configuration entries into a single
masterURL entry. Fixes the problem with connecting to an HTTPS version
of the master server and also makes it easier to host the master server
behind a reverse proxy.
This breaks all known code interfacing Clusterio.