In type definitions rename baseTypeId to baseId for consistency

cmisTypeDefinitionType now has "id", "parentId" but also "baseTypeId" whose formation is not consistent (we know it's a type, no need to put it in the attribute name).
Therefore I propose renaming baseTypeId to baseId.
This impacts the schemas, and in the domain model 2.9.2.1, 2.9.4.1.1, 2.9.4.2.1, 2.9.4.3.1 and 2.9.4.4.1.

Note that I don't propose to change cmis:BaseTypeId.

Related issues: CMIS-87, CMIS-317.