Merge branch '2667-headless_and_conf' into 'dev'

: dev.org : add warning about conf.js and headless bowser testing

See merge request !83

doc/dev.org

@@ -424,6 +424,14 @@ make functional
    yum install xvfb
    #+END_SRC
 
+   If you have set a configuration file (browser/js/conf.js), you should remove it during the headless testing. The easiest way to do it is to launch these commands before and after the test
+   #+BEGIN_SRC sh
+   # before tests
+   mv browser/js/conf.js     browser/js/conf.js.bak 
+   # after tests
+   mv browser/js/conf.js.bak browser/js/conf.js    
+   #+END_SRC
+   
    Then the browser tests can be launched in headless mode with:
    #+BEGIN_SRC sh
    make headless