Add the contact cvar and server info string to contain contact information to reach out the server admin when needed

[illwieckz]

• sv_init: add the contact cvar and server info string to contain contact information to reach out the server admin when needed
• common: disable logging suppression in Info_Print() (used by commands like /systeminfo and /serverinfo)

[illwieckz]

The abuse system info string can be read (if set) inside the game with the /serverinfo command, and outside of the game with this command:

qstat -R -unvanquisheds <server>

The idea is that we will encourage public server owners to give some contact information, be it a chat or forum nick, or email address, or whatever we can use to reach them.

This could be usable to reach out server admins outside of the game for processing abusive behavior from players. It is why it is named abuse, like the abuse mail address convention.

This could also be usable to reach out server admin to tell them to update their servers.

Actually writing there the forum nick may allow us to integrate the web server list with the forum private message feature. At some point we may recommend this.

[illwieckz]

At some point we may enforce this string to be set for starting public servers. People will still be free to put garbage there so giving information will still not be mandatory, but it would be mandatory for the public server owner to decide to not give contact information on purpose.

So people wanting to remain fully anonymous (even not disclosing their forum/chat nick name) but actually doing things right would not be bothered.

But if we need to contact a server owner because of abusive behavior not being processed and we discover the server owner intentionally doesn't want to be reached out, we may decide to blacklist the server. So basically it would help to make the difference between neglect and intentional ill-will.

That's why I believe we may require that value to be set in the future for starting public servers, as making it a requirement:

• doesn't require good people to leave anonymity if the admin job is done right,
• would help making the difference between good will and bad will if the admin job isn't done right,
• it would encourage nice people to give contact information so it help us coordinating things in a better way.

What we can do is to have it optional (with the warning) for the next version and the next-next version would make it required.

[slipher]

A commented-out example in dist/configs/config/server.cfg would be good.

LGTM