Implemented simple new/edit methods for standalone fragments

Merge branch 'feature/extend_plan_details' into feature/occuring_answers

Added simple occurring answers implementation

Uncommented verify_authorized in StructuredAnswer controller

Changed fragment initialization task

Reorganized structured answer routes

User can now choose & edit contact & principal investigator from the created person fragment list

Added StructuredAnswer policy & authorization

Small fix to the parent fragment update

Small fix, delete button should work for parterns & funding after the table is refreshed

Should be able to create a new Partner or Funding

Deleting a Partner or Funding should refresh the list properly

Funding & Partners should be editable

Changed Update & Delete buttons in Partners & Funding list

Added Funding form

First version of the Partners creation & edit form

Implemented a first version of the to_string method for JSON fragment

Person fragments are updatable through the Projet & Meta form

First working version of the new Plan details form

Fixed ethical_issue name in structured answer

Added classname to the schema form

Added task to initialize old plans with json fragments

Moved maDMP code from the roadmap codebase to the OPIDoR codebase

Merge pull request #5 from opidor/feature/save_dmpdata_as_json ...

Feature/save dmpdata as json

Merge branch 'dev' into feature/save_dmpdata_as_json

Removed useless line

Started tests implementation

Removed schema presence validation for now

Updated fragment models according to data model

Multiple changes to Project & Meta fragments are saved ...

Persons fragments should be created only when they don't exist