Added action validations on popup forms

api/controllers/Responses.php

app/admin/api/edit.php

app/admin/authentication-methods/edit-AD.php

app/admin/authentication-methods/edit-LDAP.php

app/admin/authentication-methods/edit-NetIQ.php

app/admin/authentication-methods/edit-Radius.php

app/admin/authentication-methods/edit-SAML2.php

app/admin/custom-fields/edit.php

app/admin/device-types/edit.php

app/admin/devices/edit.php

app/admin/firewall-zones/zones-edit.php

app/admin/groups/edit-group.php

app/admin/languages/edit.php

app/admin/locations/edit.php

app/admin/nameservers/edit.php

app/admin/nat/edit.php

app/admin/nat/item-add.php

app/admin/powerDNS/domain-edit.php

app/admin/powerDNS/record-edit.php

app/admin/racks/edit-rack-devices.php