added unit test for new visibility model and updated projects test to check visibility

Added visibility model, and started updating tests for public dmps controller but we need to create fixtures which is extremely difficult with the current state of the DB. Will wait for refactor before finishing tests.

removed old is_test and is_public migrations for projects table and added migration for visibilities table

updated organisations to orgs, and associated views/controller

renamed organisations_controller to orgs_controller

updated user policy for organisation->org renaming

updated users controller

updated users_controller, mainly renaming roles to perms

updated code style in omniauth_shibboleth_request_controller

renamed comments to notes

working on public dmp export

worked on routing and controller tests for new public dmps. Fixed routing tests so that they use rails route helpers

added tests for public DMPs routes and controller endpoints

Added initial public DMPs page to display public plans to unauthenticated users

updated a view for settings controller

code style change in sessions_controller

added comments to home_controller, awaiting discussion

updated contacts_controller

removed organisation_users controller as duplicate from users controller

updated some of the answers structure, commented for future updates

fixed bug in is_test and is_public setters so that it allows both a true boolean or an int

Added an index to the projects table for id, is_test and is_public

fixed equality bug in is_test and is_public setters on Projects model

added JS logic to prevent is_test and is_public from both being true on the project edit page. Also added include to projects show page so that it pulls in the projects.js file

Added locale specific column headers for new visibility column. Made the new column NOT a default

Added logic to display the correct visibility based on whether the project is_test or is_public or neither

Added 'visibility' to the list of potential columns for the plan list page

Added 'visibility' to the list of potential columns for the plan list page

updated locale files so that helpers.yes and helpers.no work. Those are yaml keywords so they must be quoted (e.g. 'yes': 'Oui' instead of yes: 'Oui'). Added is_public and is_test checkboxes to projects edit/create forms

fixed typo in params security on Projects controller. verified that plans can be created and updated