Bug 686544 - Opening new image window doesn't restore docks

Call gimp_dialog_factory_show_with_display() in gimp_display_new(), we
otherwise do this only when the ICONIFIED state of an image window
changes.

app/display/gimpdisplay.c

@@ -34,6 +34,8 @@
 #include "core/gimpimage.h"
 #include "core/gimpprogress.h"
 
+#include "widgets/gimpdialogfactory.h"
+
 #include "tools/gimptool.h"
 #include "tools/tool_manager.h"
 
@@ -453,6 +455,11 @@ gimp_display_new (Gimp              *gimp,
   gimp_image_window_add_shell (window, shell);
   gimp_display_shell_present (shell);
 
+  /* make sure the docks are visible, in case all other image windows
+   * are iconified, see bug #686544.
+   */
+  gimp_dialog_factory_show_with_display (dialog_factory);
+
   g_signal_connect (gimp_display_shell_get_statusbar (shell), "cancel",
                     G_CALLBACK (gimp_display_progress_canceled),
                     display);