streamlined the interaction between the settings sneak-to-place-field, sneak-to-place-normal-block, the /ps off switch and the sneak-to-place flag (which was listed erroneously on the wiki as sneaking-to-place, this has been fixed).

 Now the settings are obayed first, if the sneak-to-place flag is present on a field it overrides the settings, and if /ps off is used it will overrides them all.

 (fixes #465)