include copy of django_extension, dont install django from git

contrib/django_extensions/docs/jobs_scheduling.rst

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+Jobs scheduling
+===============
+
+:synopsis: Documentation on creating/using jobs in Django-extensions
+
+
+JobsScheduling
+--------------
+
+
+This page is very much; Work in Progress
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Creating jobs works much like management commands work in Django.
+Use create_jobs to make a 'jobs' directory inside of an application.
+After that create one python file per job.
+
+Some simple examples are provided by the django_extensions.jobs package.
+
+A job is a python script with a mandatory Job class which extends from
+HourlyJob, DailyJob, WeeklyJob or MonthlyJob. It has one method that must be
+implemented called 'execute', which is called when the job is ran.
+
+The following commands are related to jobs:
+
+* create_jobs, created the directory structure for jobs
+* runjob, runs a single job
+* runjobs, run all hourly/daily/weekly/monthly jobs
+
+Use "runjob(s) -l" to list all jobs recognized.
+
+Jobs do not run automatically !
+
+You must either run a job by hand, with which you can specify the exact time on
+which the command is ran, or put something like the following lines in your
+crontab file.
+
+@hourly /path/to/my/project/manage.py runjobs hourly
+
+@daily /path/to/my/project/manage.py runjobs daily
+
+@weekly /path/to/my/project/manage.py runjobs weekly
+
+@monthly /path/to/my/project/manage.py runjobs monthly