Add tooltips to overflowing labels

mods/common/chrome/missionbrowser.yaml

@@ -34,11 +34,14 @@ Background@MISSIONBROWSER_PANEL:
 					Width: PARENT_RIGHT - 27
 					Height: 25
 					X: 2
+					EnableChildMouseOver: True
 					Children:
-						Label@TITLE:
+						LabelWithTooltip@TITLE:
 							X: 10
 							Width: PARENT_RIGHT - 20
 							Height: 25
+							TooltipContainer: TOOLTIP_CONTAINER
+							TooltipTemplate: SIMPLE_TOOLTIP
 		Container@MISSION_INFO:
 			X: 300
 			Y: 50
@@ -149,6 +152,7 @@ Background@MISSIONBROWSER_PANEL:
 					Y: 1
 					Width: 640
 					Height: 375
+		TooltipContainer@TOOLTIP_CONTAINER:
 
 Background@FULLSCREEN_PLAYER:
 	Width: WINDOW_RIGHT