Karaage

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* Move karaage.common.logging to common.logging, as we cannot initialize
karaage.common at time logging is loaded with Django 1.9. Will require config
change.

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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.