aj/chamilo-lms2 @ experimental2

Yannick Warnier d3ada5c29e Replace id_session by session_id and course_code by c_id where relevant due to doctrine merge		9 lat temu
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HookResubscription.php	d3ada5c29e Replace id_session by session_id and course_code by c_id where relevant due to doctrine merge	9 lat temu
Resubscription.php	53067f1138 Replace former calendar year with natural year and add new calendar year option - refs BT#9438	9 lat temu