JU-11 Add the ability to customize the registration fields

[magajh]

This feature adds the ability to customize the registration form

IMPORTANT
There is a typo HERE that was fixed in this PR #583

Documentation
https://docs.google.com/document/d/1XpVO596QXbx6IAzo88jiHMxH08tCO3s-NXx85TWjrB0/edit

For further context about the implementation, you can refer to the PRs description from the Juniper migration, where the feature was added.

PRs from previous migration
#458
#463
#481
#494

Minor changes in the code for Lilac

• six.text_type() --> str()
• isinstance( , six.string_types) --> isinstance(, str)

Testing
Microsite settings

   "EDNX_CUSTOM_REGISTRATION_FIELDS": [
       {
           "label": "Document Type",
           "name": "type_document",
           "options": [
               "DNI",
               "PASSPORT",
               "ID"
           ],
           "type": "select"
       },
       {
           "label": "Document Number",
           "name": "personal_id",
           "type": "text"
       },
       {
           "label": "Phone number",
           "name": "mobile",
           "type": "text"
       },
       {
           "label": "Address",
           "name": "address",
           "type": "text"
       },
       {
           "label": "Company Name",
           "name": "company",
           "type": "text"
       }
   ],
   "REGISTRATION_EXTRA_FIELDS": {
       "address": "required",
       "company": "optional",
       "country": "hidden",
       "gender": "required",
       "goals": "hidden",
       "honor_code": "hidden",
       "level_of_education": "hidden",
       "mailing_address": "hidden",
       "mobile": "required",
       "personal_id": "required",
       "terms_of_service": "required",
       "type_document": "required",
       "year_of_birth": "hidden"
   },
   "REGISTRATION_FIELD_ORDER": [
       "gender",
       "type_document",
       "personal_id",
       "email",
       "mobile",
       "address",
       "company"
   ],
   "extended_profile_fields": [
       "type_document",
       "personal_id",
       "mobile",
       "address",
       "company"
   ]

[mariajgrimaldi]

what if we made this case insensitive? :thinking

[magajh]

@mariajgrimaldi I'm curious as to why do you think that would be useful?

[mariajgrimaldi]

       {
           "label": "Celular",
           "name": "mobile",
           "type": "text"
       }
==
       {
           "label": "Celular",
           "name": "Mobile",
           "type": "text"
       }

[magajh]

@mariajgrimaldi you're right, I'm changing it. Thankss for the suggestion

[magajh]

@mariajgrimaldi done. I also changed the EXTRA_FIELDS method to avoid duplicates and to also make sure that field_name is always lowercase. What do you think?

[mariajgrimaldi]

can you add optional fields to your tests settings?