clean up control panel queries
removing the static, disk-based node cache.
update queries to be more efficient
Merge branch 'release-0.10' of github.com:learningequality/ka-lite into efficient_facility_usage

Conflicts:
	kalite/control_panel/views.py
small bugfixes to correct facility usage page.
fixing bugs introduced from frontend merge; implement tracking IP address in contact form submissions.
hi pdb, missed you <3
documentation changes, removing spinning 'watch' from default debug code
Merge pull request #633 from bcipolli/contact_ip

fixing contact form bugs introduced from frontend merge; implement tracking IP address in contact form submissions.
Merge branch 'release-0.10' of github.com:learningequality/ka-lite into release-0.10
I don't know why this rename is necessary, but works around an import bug.  Will look into in the future.
Pluralize 'My Orgs'; deleting orgs works.
Merge pull request #628 from bcipolli/remove_node_cache

removing the static, disk-based node cache.
Merge branch 'release-0.10' of github.com:learningequality/ka-lite into efficient_student_view
small fixes to get user to their account management page.
Merge branch 'account_management_fixes' into efficient_student_view
Zones now delete properly.
removing code for disabling buttons.  They should be hidden where appropriate.  This is a regression from the frontend merge
Merge branch 'account_management_fixes' into release-0.10
Styled delete buttons.