Always Allow con_hudlines when Using devmode

con_hudlines/con_hudtime let you see console output at the top of the screen, even when the console is closed. They only work during some game states, though, making them unusable in the forbidden game states. This merge request makes the devmode console variable override that, plain and simple, allowing easier CONS_Printf()-debugging in forbidden game states (but only when devmode is enabled).

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TL;DR: con_hudlines is now always allowed when using devmode