Tendenci

* Renamed tendenci2018 theme to tendenci2020
* Replaced http:// with https:// for urls
* Corrected batchsize option for process_unindexed command
* Fixed a DataError for event_logs
* Avoided value exceeding FIELD_MAX_LENGTH for forms
* Resolved some migration warnings

* Requires Django 2.2. Django 1.11 is no longer supported.
* T11 sites can be smoothly migrated to T12. For migration, please follow the guide in docs/source/upgrade/upgrade-to-tendenci12.txt.

* Included region field to profiles export
* Added a setting "Pre-populate Corporate Profile to Individual Membership's Application" to allow you to turn on or off the behavior of pre-populating corporate profile to individual membership's application
* Removed anonymous user access to payments (Thanks AdamBark)
* Updated dependencies (including django to 1.11.28) in requirements.txt
* Resolved some RemovedInDjango20Warning
* Fixed an AttributeError for list_corporate_memberships
* Fixed UnserializableContentError for /pages/feed/

* Handled the case in event registrations when management forms are tampered maliciously

* Custom forms can now map more fields in profiles
* Allowed the allowfullscreen attribute for embeded Youtube vidoes
* Commented out the non-working historical event logs summary report
* Updated the content for some default fixtures
* Moved tendenci link from footer.html to credits.html
* Updated Pillow to the latest version 7.0.0
* Added verifydata() to avoid DataError for EventLog
* Assorted bugfixes

* SECURITY: Prevent unauthorized use of renewal URLs (Thanks PaulSD)
* Added the "member id", "join" and "last login" fields to the similar users list
* Fixed a bad escape error for forms
* Fixed a IntegrityError for users merge: insert or update on table "profiles_profile" violates foreign key constraint
* Fixed a TypeError for forums: argument cannot be of 'NoneType' type, must be of text type
* Avoided NoReverseMatch errors on tag detail
* Fixed a KeyError error 'start_dt' for events pricing edit