Revert "[SP] Partial fix for rotate pic."

This reverts commit 57804fb45276369d7642b6a93105cf2538795ce4.
Revert "[MP] Partial fix for rotate pic."

This reverts commit ea424ba50bae8fc125cbcc1a4c88d4d65f2ffa56.
Revert "[SP] Port the proper RB_RotatePic/RB_RotatePic2 from Rend2."

This reverts commit c994bc72559ce9239f77c839cdd7858d7243d50a.
Revert "[MP] Port the proper RB_RotatePic/RB_RotatePic2 from Rend2."

This reverts commit 37ad208c1ee731054c86692ef45b5ef1e0a5cd74.
[SP] Add numpad 0-9 conversion to 0-9 with numlock on from MP engine.
This will mean the numbered numpad keys can only be bound to separate binds from numbers when numlock is off which is same as MP now.
But you will be able to use the numpad numbers in console/textboxes now.
Revert "[MP] Fix from Tequilla's ioq3 commit g_mover.c in part of ioquake/ioq3@223b851b7ba8fc052eb16a830d3a79b994857884"

This reverts commit 8978e9a4618a06efc6cc4c24abee0be695e32aa9.
This commit fixes #595.