Removes an unused instance variable, fixes wrong return values for probes with no runs

Author: codeZeilen

packages/Babylonian-UI.package/BPProbeMorph.class/instance/valuesMorphFor..st

@@ -4,10 +4,10 @@ valuesMorphFor: trace
 	| values valuesContainer |
 	values := trace valuesForProbeId: self id.
 	values first traceHasFailedBefore ifTrue: [
-		^ 'Error during execution: ' , trace recordedException printString].
+		^ ('Error during execution: ' , trace recordedException printString) asMorph].
 
 	values := self filterValues: values throughSliderForTrace: trace.
-	values ifEmpty: [^ self noValuesText].
+	values ifEmpty: [^ self noValuesText asMorph].
 
 	valuesContainer := self newContainerMorph.
 	values 

packages/Babylonian-UI.package/BPProbeMorph.class/methodProperties.json

@@ -19,5 +19,5 @@
 		"setExpressionButtonClicked" : "pre 9/22/2020 10:05",
 		"updateExpressionMorphIfNecessary" : "pre 9/22/2020 10:04",
 		"updateFrom:" : "pre 10/12/2020 17:28",
-		"valueMorphFor:" : "pre 10/12/2020 17:29",
-		"valuesMorphFor:" : "pre 10/12/2020 17:28" } }
+		"valueMorphFor:" : "pre 10/12/2020 17:39",
+		"valuesMorphFor:" : "pre 10/12/2020 17:37" } }

packages/Babylonian-UI.package/BPTraceBasedMorph.class/properties.json

@@ -10,7 +10,6 @@
 		"allTracesCompleted",
 		"tracesMorph",
 		"widgetsMorph",
-		"sliderForFiltering",
 		"slidersForFiltering" ],
 	"name" : "BPTraceBasedMorph",
 	"pools" : [