Add docstrings to management commands

cas_server/management/commands/cas_clean_sessions.py

@@ -1,3 +1,4 @@
+"""Clean deleted sessions management command"""
 from django.core.management.base import BaseCommand
 from django.utils.translation import ugettext_lazy as _
 
@@ -5,6 +6,7 @@ from ... import models
 
 
 class Command(BaseCommand):
+    """Clean deleted sessions"""
     args = ''
     help = _(u"Clean deleted sessions")
 

cas_server/management/commands/cas_clean_tickets.py

@@ -1,3 +1,4 @@
+"""Clean old trickets management command"""
 from django.core.management.base import BaseCommand
 from django.utils.translation import ugettext_lazy as _
 
@@ -5,6 +6,7 @@ from ... import models
 
 
 class Command(BaseCommand):
+    """Clean old trickets"""
     args = ''
     help = _(u"Clean old trickets")