Use getFromKeyFieldsOr404 in slots() and allocateSlots()
Use getFromKeyFieldsOr404 in slots() and allocateSlots()

Handling of the exception is done by the view decorator.

Patch by: Sverre Rabbelier

--HG--
extra : convert_revision : svn%3A32761e7d-7263-4528-b7be-7235b26367ec/trunk%402419

rhyolight/nupic.son,rhyolight/nupic.son,rhyolight/nupic.son