RaidCore

Fix:

• Fix the encounter detection for elemental pairs (second and last way to trig)
• [DS] Gloomclaw: Fix the tracking of Gloomclaw's health
• [DS] Limbo: Fix a sound alert from a cast of the Keeper of Sands.
• [DS] Maelstrom: Fix an lua error ( no functional changes ).
• [DS] Logic Guided Rockslide: Fix the line between the player focused and boss.
• [DS] Water/Logic: Fix the information message about the remaining Armor Interrupt.

Bugs were added from 5.8 (I did it too quickly)