** Added TODO
** Changed SelectFieldOption optText -> text
** Removed unused RightAnswer entity from materialfields plugin
** Renamed SelectFieldOption entity into QuerySelectFieldOption
** Merged materialhtmlembed plugin into material plugin
** Moved query field controllers from materialfields plugin into
material plugin
** Moved query field entities from materialfields plugin -> material
plugin
** Merged materialfields plugin into material plugin
** Removed unused Reply entity
** Changed WorkspaceMaterialFieldAnswer to act as a base class for
WorkspaceMaterialTextFieldAnswer and WorkspaceMaterialSelectFieldAnswer
entities
** Fixed problems with jpa metamodel