** Removed unused text column from QuerySelectField
** Added entity to represent select field answers
** Fixed annotation on WorkspaceMaterialSelectFieldAnswer
** Added findByMaterialAndName method into QueryFieldDAO
** Added findBySelectFieldAndName into SelectFieldOptionDAO
** Registered WorkspaceMaterialSelectFieldAnswerDAO and
WorkspaceMaterialSelectFieldAnswer in WorkspacePluginDescriptor
** Added methods for finding, creating and updating select field answers
into WorkspaceMaterialFieldAnswerController
** Registererd QueryFieldController and SelectFieldOption in
MaterialHtmlFieldPluginDescriptor
** Added support for creating query select fields
** Added support for saving select fields