Improve base_shutdown.lua
 * Add built-in support for trigger-based buttons (blue_security_trigger/red_security_trigger)
 * Add built-in support for Lua-defined security shutdown length (SECURITY_LENGTH)
 * Add built-in support for turning on/off lights, brushes, trigger_ff_clips, and trigger_hurts
 * Add some helpful team-oriented trigger definitions in base_teamplay.lua
Convert ff_shutdown2.lua to take advantage of the new base_shutdown.lua
Convert ff_aardvark.lua to take advantage of the new base_shutdown.lua
Convert ff_destroy.lua to take advantage of the new base_shutdown.lua
Convert ff_openfire.lua to take advantage of the new base_shutdown.lua
Convert ff_schtop.lua to take advantage of the new base_shutdown.lua
:lipstick:
base_shutdown: Fix security clips not being defined and add support for toggling multiple clips with the same name
Review: Avoid the ternary operator and remove redundant safety when saving base security_* functions
Merge pull request #1 from fortressforever/features/better-base-shutdown

Better base_shutdown.lua