Document editor: field Type

A new Main type with subtypes should be added to list of document types in Cataloging editor as it is necessary to distinguish teaching materials from other types of documents.

Main type : Maintype_Teaching_material : French translation Matériel d'enseignement
Subtypes :

• docsubtype_reading_kit / French translation: Mallette de lecture
• docsubtype_experimentation_kit / French translation: Mallette d'expérimentation
• docsubtype_thematic_kit / French : Mallette thématique
• docsubtype_official_material / French : Moyen d'enseignement officiel
  docsubtype_guided_reading / French : lecture suivie