Update source strings

Author: PrismAutomata

ga.ts

@@ -13185,7 +13185,7 @@ Are you sure?</source>
     </message>
     <message>
         <source>View widget themes folder.</source>
-        <translation type="unfinished"></translation>
+        <translation type="unfinished">Féach ar an bhfillteán téamaí giuirléidí.</translation>
     </message>
     <message>
         <source>The cat appears in the background and is not shown by default. It is only made visible when pressing the Cat button in the Toolbar.</source>