Fixed missing research output abbreviation & fullname when creating a plan

Merged DMPRoadmap V2.1.2

Renamed ResearchOutputs columns

Datasets has been renamed as Research outputs

Fixed plan copy for plans with datasets

Datasets integration

Added code to make Search functionality case-insensitive. ...

Changes:
   - relevant models with :search scope updated with lower casing  of the column
     values and the search parameters.
   - fixed all rubocop warnings on the changed models except
     "Style/RedundantReturn: Redundant return detected."

   Note: one could not use 'ILIKE' in WHERE clauses changed as it is not supported by MariaDB and MySql.
   Hence we use lower() in changed WHERE clauses.

 Fix for issue #2080

Fixed models & schema annotations

Commented overridden methods in controllers & models

Fix on mixins calls in helpers & models

Separated core code from ours improvements for the new visibility

Merged with DMPRoadmap:master

added check to feedback_requested (#2012)

fixed query (#2008)

updated organisational plans query to only include completed plans to match logic of plan export (#2004) ...

refactored plan.visibility_allowed? to call underlying method on phases

refactored plan.visibility_allowed? to call underlying method on phases

fixed tests

made recommended adjustments

removed debug statements

finished up changes to controllers

updated Role, Plan logic and fixed tests

refactor plan/role functionality to use flagshihtzu properly

Refactor how section ordering is handled (#1837) ...

* Extract template customizations into own controller

* Refactor Template model methods

* Fix view logic in draggable sections

* Add button for customising phase

* Fix rubocop violations in GuidanceService

* Rename GuidanceService to GuidancePresenter

* Fix bug in phase preview order sections

* Refactor preview action/controller code

* Fix Section ordering in various views

* Fix rubocop violations

* Fix bug forcing Phases to be modifiable

* Fix broken tests

* Update method to check if section is draggable

* Extract copy action into its own resource

* Extract customization transfers to own controller

* Remove redundant routing condition

* Fix Rubocop violation issues

* Change condition for section draggable

* Refactor instance variable in PlansController

* Fix broken tests

* Add test support for 'de' locale

* Fix merge issue in plans controller

* Fix broken specs in plan#request_feedback

Issue 1845 (#1846) ...

* Fix bug preventing Feedback from being requested

* Fix Rubocop violations

* Extract feedback requests into own controller

* Add test for feedback requests

* Fix Rubocop violations

Merge roadmap/master into dmpopidor_branding

Configurable plan access (#1828) ...

* added configuration options to branding.yml for plan access, updated links to be dependant on access

* updated spec to expect multiple calls to branding

Fix duplicates in guidance group options ...

Restructure the `has_many` association to use SQL's DISTINCT function

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

Remove redundant database tables and columns

Remove redundant database tables and columns ...

Remove redundant columns and tables listed in #1382

Update models and factories with new schema structure comments.

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

Fixed broken Plan specs after model

Refactored model code for better readability