chatview: open files on click

Seems that Qt.openUrlExternally doesn't find symlinks. At least
with MessagesAdapter::openUrl everything seems good

Change-Id: I636822a7f2f7e9ef27f2faedb49987ea2cbba343

src/commoncomponents/SBSMessageBase.qml

@@ -131,7 +131,7 @@ Control {
         acceptedButtons: Qt.LeftButton
         onClicked: {
             if (root.hoveredLink)
-                Qt.openUrlExternally(root.hoveredLink)
+                MessagesAdapter.openUrl(root.hoveredLink)
         }
     }
 }