Allow for users to select what proc/alert triggers bar border color change, alpha/flash, and a new main bar color.

Presently these are all hard-coded to occur on a per-spec basis. Here is the baseline config for Shadow as an example:

• Bar Border Color (select 1-ish):
• • Overcap Insanity
• Alpha/Flash (select 1):
• • Devouring Plague usable
• Primary Bar Color (select many-ish?):
• • Devouring Plague usable
• • When in Voidform
• • When under X time left in Voidform
• Audio Cues (select many):
• • Devouring Plague is usable
• • Mind Devourer procs
• • Overcapping Insanity
• • When you die in S2M (this one doesn't count, really)

This could be changed to something more like:

• Bar Border Color:
• • Choose 1 ( maybe add a second priority color/selection?):
• • • Overcap Insanity
• • • Devouring Plague usable
• • • Mind Devourer proc
• Alpha/Flash (select 1):
• • Choose 1:
• • • Overcap Insanity
• • • Devouring Plague usable
• • • Mind Devourer proc
• Primary Bar Color (select many-ish?):
• • Always:
• • • When in Voidform
• • • When under X time left in Voidform
• • Choose 1:
• • • Overcap Insanity
• • • Devouring Plague usable
• • • Mind Devourer proc
• Audio Cues (select many):
• • Choose as many as you'd like:
• • • Devouring Plague is usable
• • • Mind Devourer procs
• • • Overcapping Insanity
• • • When you die in S2M (this one doesn't count, really)

Once #163 is finished, maybe another strategy is to have the bar text variables (via expressions) drive these aspects of the bar. I.e.:
Holy's Flash Concentration causing bar border to change when in combat and either not at 5 stacks or less than 3gcds remaining would be something like,
$inCombat&($fcTime<3*$gcd|$fcStacks<5)

This will be added as part of Holy Priest support, then will roll out to other specs later. Probably.