Pause Music v1a

Well gosh darn it, not every release is perfect initially :P

CHANGELOG​

• Completely forgot that you can open the pause menu in the intermission. Fixed an issue with that.
• Fixed setting the Lua.PauseContinuous value to 0 still counting the music as continuous.

That would have been all that I've changed, but I decided to go a little further.

• If the pause music is not continuous with the level music, the latter will now fade out upon bringing out the menu. Suggested by Frostiikin.
• Whenever a jingle is playing in a level with continuous pause music, the menu will instead play the default theme.