Merge branch 'dev' of git.parisson.com:git/teleforma into dev

diff --cc teleforma/models/core.py
index c091edee57e72f01ec6beb8ca6b1266996c365a1,f0649e39d0411061f869ed428a2a80385d82a71c..6a37674d28036cfb2b95b2f8c3035c6c1a05f832
--- 1/teleforma/models/core.py
--- 2/teleforma/models/core.py
+++ b/teleforma/models/core.py
@@@ -194,9 -194,7 +194,13 @@@ class Course(Model)
      oral_2 = models.BooleanField(_('oral_2'))
      has_exam_scripts = models.BooleanField(_("copies d'examen"), default=True)
      quiz = models.ManyToManyField(Quiz, verbose_name=_('quiz'), blank=True, null=True)
 +    # last professor which received a student message on automatic mode
 +    last_professor_sent = models.ForeignKey('Professor', blank=True, null=True)
 +
++    periods = models.ManyToManyField('Period', related_name="courses",
++                                     verbose_name=u'Périodes associées',
++                                     blank=True, null=True)
+ 
      periods = models.ManyToManyField('Period', related_name="courses",
                                       verbose_name=u'Périodes associées',
                                       blank=True, null=True)