added check to migration to see if new_plan table exists prior to attempt to create a new NewPlan model

Moved orcid_id from users table to user_identifiers. Added option_based flag to question_formats. switched Object.const_defined to table_exists checks in db migrations because rails loads references to classes on demand so the objects are likely not defined when the migrations run. safer to check for the underlying table's existence

Added checks to migration files that manipulate data to make sure that the model they are attempting to access is defined in the current codebase

fixed merge conflicts

updated the migration to set the customizing organisation properly

fixed template versioning and customisers in migration

final tweks to ensure all migrations happen together

updated data migration to not over-write organisation_id for templates with nil

additionally stores old project_id for new_plans

changed the way answers are selected in migration

updated prefetching, relocated index definition, and removed debug for migration

wrapped migration in transaction for performance

updated code to write user-generated content (answers/notes)

removed early cutting for template project and relpaced with better selection

updated to allow template versioning to function correctly

total schema data migration: now with customized templates

preliminary migration of db schema - migration subject to change