Do not re-add the panel when changing visibility
Do not re-add the panel when changing visibility

Change StandardFieldsDialog to not re-add the panels when changing its
visibility.

gsavastano/zaproxy,zaproxy/zaproxy,Ali-Razmjoo/zaproxy,meitar/zaproxy,gmaran23/zaproxy,gsavastano/zaproxy,gsavastano/zaproxy,psiinon/zaproxy,gsavastano/zaproxy,zapbot/zaproxy,Ali-Razmjoo/zaproxy,thc202/zaproxy,meitar/zaproxy,gmaran23/zaproxy,zaproxy/zaproxy,meitar/zaproxy,zapbot/zaproxy,thc202/zaproxy,meitar/zaproxy,meitar/zaproxy,gsavastano/zaproxy,gmaran23/zaproxy,zapbot/zaproxy,gmaran23/zaproxy,gmaran23/zaproxy,psiinon/zaproxy,Ali-Razmjoo/zaproxy,zaproxy/zaproxy,thc202/zaproxy,thc202/zaproxy,thc202/zaproxy,kingthorin/zaproxy,psiinon/zaproxy,zapbot/zaproxy,kingthorin/zaproxy,psiinon/zaproxy,zaproxy/zaproxy,psiinon/zaproxy,thc202/zaproxy,psiinon/zaproxy,zapbot/zaproxy,meitar/zaproxy,zapbot/zaproxy,kingthorin/zaproxy,zaproxy/zaproxy,kingthorin/zaproxy,Ali-Razmjoo/zaproxy,Ali-Razmjoo/zaproxy,psiinon/zaproxy,zapbot/zaproxy,kingthorin/zaproxy,gmaran23/zaproxy,thc202/zaproxy,meitar/zaproxy,Ali-Razmjoo/zaproxy,gsavastano/zaproxy,Ali-Razmjoo/zaproxy,meitar/zaproxy,zaproxy/zaproxy,gsavastano/zaproxy,kingthorin/zaproxy,zaproxy/zaproxy,kingthorin/zaproxy,gmaran23/zaproxy