toxic.conf.5: Remove default config from man page

The reference to the config example in the FILES section should be sufficient.

Signed-off-by: Loui Chang <louipc.ist@gmail.com>
Merge pull request #218 from louipc/louipc

toxic.conf.5: Remove default config from man page
toxcore API update, add option to force TCP connection
help: lowercase keybinding hints for clarity.

Seeing the uppercase character I expected it to be the actual key.

Signed-off-by: Loui Chang <louipc.ist@gmail.com>
ipv6enabled parameter was removed in toxcore.

Signed-off-by: Loui Chang <louipc.ist@gmail.com>