Add references to the tests page

docs/source/_templates/indexcontent.html

@@ -33,6 +33,8 @@
          <span class="linkdescr">represent features common to various websites</span></p>
       <p class="biglink"><a class="biglink" href="{{ pathto("guides/module") }}">Modules</a><br/>
          <span class="linkdescr">each one handles a specific website and implement capabilities</span></p>
+      <p class="biglink"><a class="biglink" href="{{ pathto("guides/tests") }}">Automated tests</a><br/>
+         <span class="linkdescr">tests all modules, make continuous integration</span></p>
     </td><td width="50%">
       <p class="biglink"><a class="biglink" href="{{ pathto("api/core/index") }}">Core Library</a><br/>
          <span class="linkdescr">provides all the features needed by modules</span></p>

docs/source/guides/index.rst

@@ -11,3 +11,4 @@ Contents:
    module
    capability
    application
+   tests

docs/source/guides/module.rst

@@ -420,6 +420,8 @@ To try running test of your module, launch::
 
     $ tools/run_tests.sh example
 
+For more informations, look at the :doc:`tests` guides.
+
 Advanced topics
 ***************