Increase placeholder size, clear packet displays on Clear as well

Author: redawl

internal/ui/placeholder.go

@@ -19,6 +19,7 @@ func NewPlaceHolder(label string, icon fyne.Resource) *PlaceHolder {
 		label: &widget.Label{
 			Text:       label,
 			Importance: widget.LowImportance,
+			SizeName:   theme.SizeNameSubHeadingText,
 		},
 		icon: &widget.Icon{
 			Resource: theme.NewDisabledResource(icon),

internal/ui/testdata/mainWindow.png

@@ -70,6 +70,8 @@ func MakeUi(packetChan chan packet.HttpPacket, restart func()) fyne.Window {
 			listPlaceHolder.Hide()
 		} else {
 			listPlaceHolder.Show()
+			requestContent.SetText("")
+			responseContent.SetText("")
 		}
 	})