* Initial sponsor application modeling

* Form to create a new sponsor application

* Simple view to display new sponsor application form

* Use cookie to store selected benefits

* Redirect user back to benefits form if no data in cookie

* Simple template view to work as the final step

* Move helper test method to utils

* Make sure wokflow finishes as expected

* Create sponsorship using information, benefits and package

* Post also creates sponsorship

* Use the package amount as sponsorship fee

* Inform users about why they are being redirect

* Clean up cookies after creating sponsorship

* View to preview sponsorship

* Remove old TODO note

* Trailing slashes

* Clean up current Sponsor model implementation

* SponsorInformation is now the Sponsor model

* Create select field for user to pick existing sponsors

* Create formset for contacts

* Refactor sponsorship application form to use contacts formset

* Remove deprecated comment

* Better determine primary and user contact

* Install django widget tweaks

* Render form fields manually

* Better display for contacts form

* Implement missing __str__

* JS to control contact field sets

* Hide/show logic if user has previous sponsor

* Fix CSS error with upload inputs

* Display SponsorContact in the admin

* Unit test new property

* New sponsor fields are only required if no sponsor was selected

* Display message with sponsorship information

* Check benefits if already selected

* Display form errors

* Fix test to properly force error

* Checkbox to select primary contacts

* Force order to avoid tests inconsistency

* Display price preview

* CSS fix for contacts form

* Display the form if errors

* Refactor how contacts are being structured so they fit well if errors

* Implement logic to check if application is for a modified package

* Add status field to Sponsorship

* allow reordering sponsorship programs in django admin

* apply black formatting

* add indicator for benefits marked as new

Co-authored-by: Ernest W. Durbin III <ewdurbin@gmail.com>