** Changed FieldTranslator to return actual field instead of Object
** Renamed option list field -> select field
** Simplified deus nex machina FieldTranslator field wrapping a bit
** Moved material field meta classes from
fi.muikku.plugins.material.model.field ->
fi.muikku.plugins.material.fieldmeta
** Renamed material field meta classes to XxxFieldMeta
** Moved inner static classes from ConnectFieldMeta into
ConnectFieldConnectionMeta and ConnectFieldOptionMeta classes
** Moved static inner class from SelectFieldMeta into new
SelectFieldOptionMeta class
** Renamed WorkspaceMaterialField material -property into
workspaceMaterial to avoid confusion 
** Fixed method names in WorkspaceMaterialFieldDAO