Adding more options for configuring ping passthrough.

[TheMiningTeamYT]

When using Velocity, I have been frustrated by the lack of fine control over ping passthrough, specifically the lack of support for passing through favicons without passing through the whole ping request. I've also seen people on line asking how to pass through favicons, so I decided to add the ability to control which aspects of server list ping requests are passed through from the back end server, and which aspects aren't, through 5 new boolean configuration options in the config file.
Please don't judge my code too harshly, this is my first time writing Java, but it does compile and Checkstyle is okay with it.

[powercasgamer]

This should either respect the original option or handle migration

[TheMiningTeamYT]

Those changes are fine.
And it occurs to me that it probably would have been a good idea to give the commits more descriptive names...
too late now!