Karaage

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* Updates to packaging.
* Updates to documentation.
* Fix tests for django_tables 1.2.0.
* Enable travis tests.

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* Fix tests and ensure everything still works.

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* Documentation updates.

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* Fix broken people list links.
* Fix Jessie references in documentation.
* Enhance unlock_training_account function.
* Add documentation on making new Karaage releases.

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* Override admin email addresses using APPROVE_ACCOUNTS_EMAIL setting.
* Fix flake8 tests in migrations.
* Change order of deactivate() function to avoid multiple updates to
accounts.
* Fix issues with MAM datastore.
* Sort applications in admin list by reverse expiry date by default.
* Display machine_category in account lists.
* Don't allow editing project leaders through edit view.
* Don't allow revoking last project leader.
* Add new ALLOW_NEW_PROJECTS setting, if set to False user's will not be
able to apply for new projects, only existing projects.

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* Numerous bug fixes.
* Display software stats correctly.
* Update documentation for Jessie.
* Update MAM and slurm documentation.
* Fix problems with latest slurm.
* Fix institute form.
* Support undelete project button.
* Fix display of leaders in bounce list.
* Set date_approved in approved applicants.
* Add more tests.
* Add HSTS to instruction.
* Change name of "Is existing person" button to "Mark duplicate user".
* Attempt to clarify emails.
* Add work around for ds389 bug. Note this won't work when adding a person
and setting their password at the same time; in this case please manually
reset the password to get it to work.
https://bugzilla.redhat.com/show_bug.cgi?id=1171308