Prevent Life Orb with HP reliant attacking moves

Pokemon that have Eruption or Water Spout should not generate with Life Orb in random battles.
Added a message to /away if already away

If the user is already /away and they try to use /away, it will now alert them that they are already blocking all battle requests.
Fix Shell Bell healing twice with Metronome
Merge pull request #1244 from Relados/patch-11

Prevent Life Orb with HP reliant attacking moves
Merge pull request #1245 from Redew/update-away

Added a message to /away if already away
Prevent warning users not in the room
Properly fix Shell Bell healing twice