makeconf: kill buffer/channel questions

Use webadmin/controlpanel to configure buffers, and a client to
join channels. Both modules and chansaver are all enabled by
default since 7387f00.
makeconf: use username instead of nick as ident

Username and ident are more likely to match.
makeconf: offer SSL by default if the port is 6697
makeconf: one server is enough to get started

Webadmin is more convenient and enabled by default since 7387f00.
makeconf: reorganize network server & modules

It's more pleasant to read the network config when the most important
thing ie. the host & port are on the first line, and then the list of
modules follows afterwards.
makeconf: one network is enough to get started

Webadmin is more convenient and enabled by default since 7387f00.
makeconf: one admin user is enough to get started

Webadmin is more convenient and enabled by default since 7387f00.
makeconf: just warn if the config exists

Don’t require typing yes to continue, it’s inconvenient.
makeconf: revise the output and reduce the noise

Long "would you like ZNC to..." questions are slow to read.
Use short and pithy prompts, and try to fit the line width to
less than 80 characters. Remove Word Capitalization.
makeconf: improve alternate location handling
makeconf: promote webadmin
How about offering freenode by default? :)