[doc] put the tutorials between the intro and the `Repository development` toc of the book
Related to #4832808
# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved.# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr## This file is part of CubicWeb.## CubicWeb is free software: you can redistribute it and/or modify it under the# terms of the GNU Lesser General Public License as published by the Free# Software Foundation, either version 2.1 of the License, or (at your option)# any later version.## CubicWeb is distributed in the hope that it will be useful, but WITHOUT# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more# details.## You should have received a copy of the GNU Lesser General Public License along# with CubicWeb. If not, see <http://www.gnu.org/licenses/>.""""""fromyams.buildobjsimportEntityType,SubjectRelation,String,Int,Datefromcubes.person.schemaimportPersonPerson.add_relation(Date(),'birthday')classBug(EntityType):title=String(maxsize=64,required=True,fulltextindexed=True)severity=String(vocabulary=('important','normal','minor'),default='normal')cost=Int()description=String(maxsize=4096,fulltextindexed=True)identical_to=SubjectRelation('Bug',symmetric=True)