feat: add clear button to console panel

data/en.mse-locale/locale

@@ -80,7 +80,10 @@ menu:
 	stack:				&Stacked Bars	3
 	scatter:			S&catter Plot	4
 	scatter pie:		Sc&atter-Pie	5
-	
+	
+	console:			Console
+	clear console:		&Clear Console	Ctrl+L
+
 	window:			&Window
 	new window:			&New Window
 	cards tab:			&Cards	Alt+1
@@ -196,7 +199,10 @@ help:
 	stack:				A bar graph with stacked bars
 	scatter:			A scatter plot, the size indicates the number of cards
 	scatter pie:		A scatter plot where each item is a small pie graph
-	
+	
+	#console:
+	clear console:		Clear the console
+
 	#window:
 	new window:			Creates another window to edit the same set
 	cards tab:			Edit the cards in the set
@@ -351,7 +357,9 @@ tool:
 	curve segment:		Curve
 	free point:			Free
 	smooth point:		Smooth
-	symmetric point:	Symmetric
+	symmetric point:	Symmetric
+
+	clear console:		Clear Console
 	
 ############################################################## Toolbar help text
 tooltip:
@@ -426,7 +434,9 @@ tooltip:
 	curve segment:		To curve
 	free point:			Unlock point
 	smooth point:		Make point smooth
-	symmetric point:	Make point symmetric
+	symmetric point:	Make point symmetric
+
+	clear console:		Clear Console
 
 ############################################################## Labels in the GUI
 label:
@@ -582,7 +592,8 @@ button:
 	add custom pack:	Add &Custom Pack...
 	
 	# Console panel
-	evaluate:			&Evaluate
+	evaluate:			&Evaluate
+	clear:				&Clear
 	
 	# Welcome
 	new set:			New set