Set some dialogs modal

gajim/gtk/proxies.py

@@ -32,6 +32,7 @@ def __init__(self):
         self.set_show_menubar(False)
         self.set_title(_('Manage Proxies'))
         self.set_type_hint(Gdk.WindowTypeHint.DIALOG)
+        self.set_modal(True)
 
         self._ui = get_builder('manage_proxies.ui')
         self.add(self._ui.box)

gajim/gtk/themes.py

@@ -191,6 +191,7 @@ def __init__(self, transient):
         self.set_transient_for(transient)
         self.set_resizable(True)
         self.set_default_size(600, 400)
+        self.set_modal(True)
 
         self._ui = get_builder('themes_window.ui')
         self.add(self._ui.theme_grid)