Gutyán Gábor / circlestack

circle, common, dashboard, firewall, request: fix deprecated context and cache handling, get_models, and max_length type for ConnectCommand name

Details:
* get_models removed: https://docs.djangoproject.com/en/1.11/releases/1.7/#introspecting-applications
* post_syncdb removed: https://docs.djangoproject.com/en/1.11/releases/1.9/#features-removed-in-1-9
Alternative: post_migrate: https://docs.djangoproject.com/en/1.11/ref/signals/#post-migrate
* django.contrib.contenttypes.generic removed: https://docs.djangoproject.com/en/1.11/releases/1.9/#features-removed-in-1-9
GenericForeignKey and GenericRelation moved to django.contrib.contenttypes.fields module

Rework VM list filter

More info: #458

See merge request !387

Minor datastore detail fixes



See merge request !392

Disk and template stats

related: circle/storagedriver!14

See merge request !391

Add loading icon and disable start button after click

closes #467

See merge request !390

closes #467

Conflicts:
	circle/dashboard/views/util.py

Feature two-factor auth



See merge request !386

Ubuntu1604



See merge request !384

profile is created after 1st login

Bad wrapping of long lines of text in VM activity timeline



See merge request !383

Terminal icon



See merge request !382