CI: Fix job names for maven build tests, Router: Refactor exploratory message filter, refactor tunnel tests

as requested

i2psnark: Preserve private=0 in torrent files

See merge request !187

i2pd Bobs will do this, and i2pd Charlies will agree; issue reported to that project.
This improves on the workaround in the previous commit,
as it fails faster, and applies to IPv4 as well.

Router: revert changes to OutboundTunnelEndpoint

See merge request !184

to greatly reduce false firewalled results. Firewalled charlies are generating a lot of false positives.
This appears to be a bug with firewalled ipv6 i2pd charlies, through the current version.

Delete all torrents except magnets when changing data dir

Console: Use same color for visted links (dark theme)

See merge request !183