Update translations

Author: ichthyosaurus

translations/opal-linkhandler-el.ts

@@ -6,7 +6,7 @@
     <message>
         <location filename="../Opal/LinkHandler/private/ExternalUrlPage.qml" line="44"/>
         <source>External Link</source>
-        <translation type="unfinished"></translation>
+        <translation type="unfinished">Εξωτερικός σύνδεσμος</translation>
     </message>
     <message>
         <location filename="../Opal/LinkHandler/private/ExternalUrlPage.qml" line="103"/>