[book] fixes some references and other doc construction pbs
* predefine order of js files in index generation, skip some files
* fix some references to the base tutorial (recently changed)
* other ReST fixes
.. _RQLChapter:
Relation Query Language (RQL)
=============================
This chapter describes the Relation Query Language syntax and its implementation in CubicWeb.
.. toctree::
:maxdepth: 2
intro
language
debugging
implementation