ui: don't set the focus on the action buttons

Sometimes you can deny/allow a connection unintentionally while typing.
Now the focus is set to the "+" button, and you can jump to the deny or
allow button with the arrow keys.

Issue #58.

ui/opensnitch/dialogs/prompt.py

@@ -177,13 +177,13 @@ def _set_cmd_action_text(self):
         if self._cfg.getSettings(self.CFG_DEFAULT_ACTION) == self.ACTION_ALLOW:
             self.applyButton.setText("%s (%d)" % (self._apply_text, self._tick))
             self.denyButton.setText(self._deny_text)
-            self.applyButton.setFocus()
         else:
             self.denyButton.setText("%s (%d)" % (self._deny_text, self._tick))
             self.applyButton.setText(self._apply_text)
-            self.denyButton.setFocus()
 
 
+        self.checkAdvanced.setFocus()
+
     def _render_connection(self, con):
         app_name, app_icon, _ = self._apps_parser.get_info_by_path(con.process_path, "terminal")
         if app_name != con.process_path and con.process_path not in con.process_args: