Stargate Journey

Added:

• "sgjourney:empty" sound instance (doesn't produce sound or subtitles)

Changes:

• Movie Stargate variant will no longer produce subtitles on empty sounds
• Changed ComputerCraft function name raiseChevron to openChevron
• Changed ComputerCraft function name lowerChevron to closeChevron

Fixes:

• Fixed backside of Movie Stargate chevrons not raising
• Fixed Movie Stargate model chevrons locking in an incorrect order
• Fixed Stargate Event Horizon becoming messier the longer a Stargate has been loaded (hopefully)
• Fixed 23rd Kaliem Symbol not loading properly (hopefully)