FileServer: commandline option for setting listening host (default: 127.0.0.1)
FileServer: transform selector fallbackPage: into --fallback-page and vice versa as suggested by @herby
TestCase: use #printString instead of asString in #assert:equals:

This ensures that the string gets enclosed in '' upon failure.
Previously the start and end of a string was not distinguishable
in the error message.
Merge pull request #468 from mkroehnert/unittest

TestCase: use #printString instead of #asString in #assert:equals:
Merge pull request #467 from mkroehnert/server

Add --host switch to FileServer and change naming of commandline options