HttT S17: Add a po comments

(cherry picked from commit edcccc5)

(cherry-picked from commit 960a8fc)

data/campaigns/Heir_To_The_Throne/scenarios/17_Scepter_of_Fire.cfg

@@ -634,6 +634,7 @@
                 [message]
                     race=dwarf
                     # po: "sowl" is a rare word synonymous with "sully", meaning "contaminate". 
+                    # po: "toiled" means "difficult, requires effort".
                     message=_ "Lord Konrad, yon rumble was made by nae enemy o’ us. ’Tis the echoes of the very bedrock witherin’ and crumbling beneath us that we ’eard. Are ye nae feeling the heat redoubling? Is yer breath nae toiled for the ashes sowling the air? I beseech that we not tarry ’ere any more than we ha’ to, lest the forming abysses claim us."
                 [/message]
             [/then]
@@ -655,6 +656,7 @@
                 [then]
                     [message]
                         type=Arch Mage,Great Mage,Silver Mage
+                        # po: "din" means "loud noise". It refers to an ambient sound of collapsing cave walls.
                         message= _ "Prince Konrad, that din was made by no enemy of ours. It was the sound of the very earth that’s boiling around us, of the fire and lava that are breaching this cave even now. We must tread with caution, for the very ground we stand on may turn against us."
                     [/message]
                 [/then]