name cleanup: bar|feet -> ticks

stepmania/Themes/default/metrics.ini

@@ -2089,14 +2089,14 @@ LifePercentChangeLetGo=-0.080
 Fallback="LifeMeterBar"
 
 [DifficultyMeter]
-NumFeetInMeter=10
-MaxFeetInMeter=14
-AutoColorFeet=true
-FeetX=0
-FeetY=0
-FeetOnCommand=shadowlength,0
-FeetDifficultyChangedCommand=%function(self) self:diffuse(DifficultyColor(self.Difficulty)) if self.Meter > 9 then self:glowshift() else self:stopeffect() end end
-ShowFeet=false
+NumTicks=10
+MaxTicks=14
+AutoColorTicks=true
+TicksX=0
+TicksY=0
+TicksOnCommand=shadowlength,0
+TicksDifficultyChangedCommand=%function(self) self:diffuse(DifficultyColor(self.Difficulty)) if self.Meter > 9 then self:glowshift() else self:stopeffect() end end
+ShowTicks=false
 ShowDifficulty=false
 ShowMeter=true
 ShowEditDescription=false