[epiphany] Add tooltip to delete language action button

[Jan-Michael Brummer <jbrummer src gnome org>]

commit b85bbec707bb13b4af775c345d449088652197c0
Author: Jan-Michael Brummer <jan brummer tabos org>
Date:   Wed Jan 15 21:16:02 2020 +0100

    Add tooltip to delete language action button

 src/prefs-dialog.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/prefs-dialog.c b/src/prefs-dialog.c
index 7f4c14a64..3b9a8534d 100644
--- a/src/prefs-dialog.c
+++ b/src/prefs-dialog.c
@@ -1460,6 +1460,7 @@ language_editor_add (PrefsDialog *dialog,
   hdy_action_row_add_prefix (row, event_box);
 
   action = gtk_button_new_from_icon_name ("edit-delete-symbolic", GTK_ICON_SIZE_SMALL_TOOLBAR);
+  gtk_widget_set_tooltip_text (action, _("Delete language"));
   g_object_set_data (G_OBJECT (row), "action", action);
   g_object_set_data (G_OBJECT (action), "row", row);
   g_signal_connect (action, "clicked", G_CALLBACK (language_editor_remove_button_clicked_cb), dialog);