docs: minor typos and such... (doc-book.patch)

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# HG changeset patch
# User Dimitri Papadopoulos <dimitri.papadopoulos@cea.fr>
# Date 1364459321 -3600
# Node ID 8893802b6ecfc1f715f8ef42b8cf40ae520bc276
# Parent  6ce87a0f0a0ca90f465ba9d568433def676ff42e
Minor documentation fixes.

diff -r 6ce87a0f0a0c -r 8893802b6ecf doc/book/en/intro/concepts.rst
--- a/doc/book/en/intro/concepts.rst	Wed Mar 27 16:41:45 2013 +0100
+++ b/doc/book/en/intro/concepts.rst	Thu Mar 28 09:28:41 2013 +0100
@@ -29,8 +29,7 @@
 
 .. note::
 
- The command :command:`cubicweb-ctl list` displays the list of cubes
- installed on your system.
+ The command :command:`cubicweb-ctl list` displays the list of available cubes.
 
 .. _`CubicWeb.org Forge`: http://www.cubicweb.org/project/
 .. _`cubicweb-blog`: http://www.cubicweb.org/project/cubicweb-blog
@@ -89,7 +88,7 @@
 state of an object changes. See :ref:`HookIntro` below.
 
 .. [1] not to be confused with a Mercurial repository or a Debian repository.
-.. _`Python Remote Objects`: http://pyro.sourceforge.net/
+.. _`Python Remote Objects`: http://pythonhosted.org/Pyro4/
 
 .. _WebEngineIntro:
 
diff -r 6ce87a0f0a0c -r 8893802b6ecf doc/book/en/intro/history.rst
--- a/doc/book/en/intro/history.rst	Wed Mar 27 16:41:45 2013 +0100
+++ b/doc/book/en/intro/history.rst	Thu Mar 28 09:28:41 2013 +0100
@@ -4,7 +4,7 @@
 ===================
 
 *CubicWeb* is a semantic web application framework that Logilab_ started
-developing in 2001 as an offspring of its Narval_ research project. *CubicWeb*
+developing in 2001 as an offspring of its Narval research project. *CubicWeb*
 is written in Python and includes a data server and a web engine.
 
 Its data server publishes data federated from different sources like
@@ -28,5 +28,4 @@
 and energy originally put in the design of the framework.
 
 
-.. _Narval: http://www.logilab.org/project/narval
 .. _Logilab: http://www.logilab.fr/
diff -r 6ce87a0f0a0c -r 8893802b6ecf doc/book/en/tutorials/base/conclusion.rst
--- a/doc/book/en/tutorials/base/conclusion.rst	Wed Mar 27 16:41:45 2013 +0100
+++ b/doc/book/en/tutorials/base/conclusion.rst	Thu Mar 28 09:28:41 2013 +0100
@@ -3,7 +3,7 @@
 What's next?
 ------------
 
-In this tutorial, we have seen have you can, right after the installation of
+In this tutorial, we have seen that you can, right after the installation of
 |cubicweb|, build a web application in a few minutes by defining a data model as
 assembling cubes. You get a working application that you can then customize there
 and there while keeping something that works. This is important in agile