Updated fragments models comments

Implemented JSON fragments models methods according to the class model

Removed parent_id column

Merge remote-tracking branch 'origin/dev' into feature/schema_to_models

(WIP) Implemented structured schema into rails models

Renamed object column to classname in structured_data_schema table

Deactivated schema field validation for now

Added Schema update, create & delete forms

Added JSON schemas list for super admin

Added form-control CSS class on dynamic form fields

Fixed question display in dynamic forms

Implemented structured data save (needs to be cleaned up)

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Syntax fixes

Fixed structured format display

Changed the way schemas are linked to questions according to the database changes

Added Structured Question format in model

Changed how structured answers are handled in DB

Merge branch 'feature/dynamic_form' into dev

Added changes for dynamic form

Removed console.log

Fixed default answer form

Org admin can now add a question schema to a question, in model edit

Changed Question Format validation, can be blank if Structured is true

Added missing validation in Question model

Fix on migration

Merge branch 'feature/structured_data' into dev

Added structured schema/answers models and tables

Improved notes editors loading in plan edition