Fix bug preventing orgs loading on register page ...

Recent updates to the DB have made the `is_other` field on the Orgs table mandatory.
Previously, it was loading null values. This PR updates this to load false values instead.

Fixes #1809

Merge branch 'development' into fix/account_creation

Merge branch 'development' into feature/validations

Merge pull request #1803 from DigitalCurationCentre/issue-1738 ...

Issue 1738

Merge pull request #1802 from DMPRoadmap/refactor/database-cleanup ...

Remove redundant database tables and columns

remove comments

updated guidance_service to generate a set of tabs with names and content, reworked view to display this new structure

Remove references to Org#parent_id

Merge pull request #1800 from DMPRoadmap/refactor/tomdoc ...

Rewrite YARD comments as Tomdoc.

Fix for "Plan Download". ...

This is a clean up of code based on PR comments.

Also updated the ExportablePlan helper method as_csv() to work with the selections made on the Plan Download page.

Issue #1730

Remove redundant database tables and columns ...

Remove redundant columns and tables listed in #1382

Update models and factories with new schema structure comments.

Fix for "Plan download file not filtering on selection on Download page". ...

Issue #1730

Also included is a fix for rendering if saving a new plan or editing a plan that results in
errors.

Replace YARD documentation with Tomdoc ...

These changes use the YARD gem, but in the lighter Tomdoc format.

You can read more about Tomdoc here: https://tomdoc.org

Update schema annotations on Org model

Remove uniqueness validation from Org abbreviation

Update rules for fixing duplicate section numbers

Replace boolean DataCleanup rules with migrations ...

Decided it would be a better idea for moving forward if we just constrained these at the DB level.

Fix bug caused by blank section number

Fix no method error in overview template

Add tests to check that Template copying works

Update toolip message for draggable sections ...

As requested in Issue#1371

Merge pull request #1787 from DMPRoadmap/issue-1785 ...

Added missing VALID_FORMATS settings to models/settings/template.rb.

Merge pull request #1779 from DMPRoadmap/refactor/template-number-field ...

Remove number field from Section form

Remove number field from sections form ...

This should no longer be necessary, since the number is set automatically by ordering the sections

Removed 'Other' org from combobox to avoid confusion

Add specs for editing Template

Remove published column from sections table ...

This was no longer required, and caused a bug when trying to create a new section.

Added missing VALID_FORMATS settings to models/settings/template.rb. ...

Update package name for VALID_FORMATS in _download_form.html.erb.

Fixed empty 'Organisation' field issue

Added automatic selection of 'Other' org when using unlisted org