Tweaks to two event triggers

Allows units other than Gweddry to find the gold, and triggers the
academy-finding dialogue when moving close to it, but not if Dacyn
already got there first.

data/campaigns/Eastern_Invasion/scenarios/10_Lake_Vrug.cfg

@@ -183,12 +183,21 @@
     [event]
         name=moveto
         [filter]
-            x,y=12,4
             side=1
             [not]
                 id=Dacyn
             [/not]
+            [filter_location]
+                x,y=12,4
+                radius=3
+            [/filter_location]
         [/filter]
+        [filter_condition]
+            [variable]
+                name=Dacyn_researching
+                boolean_equals=false
+            [/variable]
+        [/filter_condition]
         [message]
             speaker=unit
             message= _ "This must be the academy Dacyn mentioned."
@@ -207,7 +216,7 @@
         name=moveto
         [filter]
             x,y=12,4
-            id=Gweddry
+            side=1
         [/filter]
         [sound]
             name=gold.ogg