
      
--------------------------------------------------------------------
Install notes:
   since i hadn't had time to take a full test of the implementation (in learn path for example)
   it is better to put all the files in a folder under  ..../claroline (like all extensions). 
   In my case it is folder named  _exercice. First access to this folder will update table quiz in
   current course. (see changes in exercice.php : alter table)
   Be carefull : exercice and _exercice shares same databases and tables. If you create new quiz in
                 first one, some new table fields will not be written and will be filled with default values.
   All additional langvars are in exercice_submit.php and exercise_admin.inc.php .            

Dependencies :
	- current exercice tables
	- current exercice tracking table
	- current agenda (calendar & agenda language file)
      

Modifications :

exercice.php : (line 168)
    added checking for altering table if quiz table isn't been altered before :
    
    ALTER TABLE `quiz` 
      ADD `show_rez` ENUM( '0', '1' ) DEFAULT '1' NOT NULL ,
      ADD `max_passage` SMALLINT DEFAULT '3' NOT NULL ,
      ADD `timed` ENUM( '0', '1' ) DEFAULT '0' NOT NULL ,
      ADD `start_date` DATETIME DEFAULT '2005-01-01 01:01' NOT NULL ,
      ADD `end_date` DATETIME DEFAULT '2005-01-01 01:01' NOT NULL ;

exercice_submit.php
	(line 53) langvars
        (line 86) tracking table
        (line 235) extended quiz control variables
        (line 293) checking : passages, timed test

exercise.class.php
        (line 46) new Exercise class properties
        (line 69) constructor modified
        (line 111) function read($id) modified
        (line 218 - ) new class methods
        (line 548) method save() modified

exercise_result.php
	(lines 117,150,170,187,198,276,286)

exercise_admin.inc.php
	(line 37) langvars : /$calendarAlt is missing from original calendar.php/
        (lines 77-86)
        (lines 111-)
        (line 127) added form name for calendar properties
        (lines 193-450) extended quiz properties form
 
I have to duplicate file tbl_change.js as function openCalendar(form, field) {..  
   calling calendar.php from current directory not from calendar subdirectory
   somebody should change call from     ./calendar.php   -- to--> ../calendar/calendar.php
