Refactor: Add User::ACCESS_? constants to check_module_permissions calls.

app/admin/circuits/edit-circuit-submit.php

app/admin/circuits/edit-circuit.php

app/admin/circuits/edit-logical-circuit-submit.php

app/admin/circuits/edit-logical-circuit.php

app/admin/circuits/edit-options-submit.php

app/admin/circuits/edit-options.php

app/admin/circuits/edit-provider-submit.php

app/admin/circuits/edit-provider.php

app/admin/customers/edit-submit.php

app/admin/customers/edit.php

app/admin/customers/unlink.php

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

app/admin/devices/edit-result.php

app/admin/devices/edit.php

app/admin/dhcp/settings.php

app/admin/locations/edit-result.php

app/admin/locations/edit.php

app/admin/nat/cleanup.php

app/admin/nat/edit-map.php

app/admin/nat/edit-result.php