Disable title map when entering a netgame

See merge request !683

Fix node player mixups

See merge request STJr/SRB2!684

Replace all instances of XD_KICK with a SendKick function

See merge request STJr/SRB2!682

Fix node numbers being used in place of player numbers

See merge request !681

Open the console in menus and draw backpic correctly

See merge request STJr/SRB2!665

Let Escape close the console

See merge request STJr/SRB2!664

Don't give player translucency when looking down with the orbital camera

See merge request STJr/SRB2!659

Accurate papersprite projection

See merge request STJr/SRB2!657

Software FOV

See merge request STJr/SRB2!662

Don't clip player MD2 when looking straight down with the orbital camera

See merge request STJr/SRB2!658

In theory, should be a performance improvement. In practice idk

I heard properpaper had some weird crashes? I couldn't reproduce
them no matter how hard I tried, but I added some bounds checking
to this version too just in case. Gotta get other people's help
to try to reproduce those.

Update copyright statements for changed names

See merge request !644

Apply skin's highresscale to continue screen

See merge request !645

More OpenGL fixes plus masked PNG conversion

See merge request !619

Fix mouse being grabbed even when not used

See merge request STJr/SRB2!639

The other way around this time.

This reverts commit 6c85c4e1.

Fix usage of V_GetColor

See merge request STJr/SRB2!638

Use GCC 8.1 for AppVeyor 64-bit builds

See merge request STJr/SRB2!624

Add clipboard functionality to the Connect via IP textbox.

See merge request !597

I was using V_GetColor in a lot of places I shouldn't have, making the game look wrong with a non-default colour profile.
Though, I left R_RainbowColormap alone.