cleaning up links
Merge pull request #473 from symfony-cmf/link-cleanup

Link cleanup
adjust to setParentDocument and mention SonataCoreBundle where needed. fix #425
always tell to use composer create-project with the right version
review routing documentation
Merge pull request #475 from symfony-cmf/cleanup-routing-bundle

reviewed routing documentation
mention templates_by_class in tutorial. fix #415
Merge pull request #476 from symfony-cmf/create-project

Create project
make all bundle install instructions only use composer
Merge pull request #477 from symfony-cmf/bundle-install

Bundle install
Merge pull request #474 from symfony-cmf/cookbook-cms-tutorial

 	mention templates_by_class in tutorial
cleaning up the odm documentation
fixing linkage
improving formulation
adjust to https://github.com/doctrine/DoctrinePHPCRBundle/pull/144