When the server is killed there may still be client-sockets connected in
the TIME_WAIT state, causing the bind() call to fail. With the
REUSEADDR option we can reuse the address immediately unless another
process is actually *listening* on the same address.
that we want to reuse the address
Reinsert --no-browser option.
Move some code to utils.main.
Some other small style changes.
Fix merge conflict misstakes.
Change settings behavior. Add tests.
Fix rebase problems.
