Org Admin provide feedback ...

Add Plans page to Org Admin section

added org admin plans page

finsihed up org admin plans page

added feedback complete and updated emails to use email_signature partial

refactored access checks on Plan now that user can have multiple roles (reviewer + ?)

finished feedback completion routine

added tests for new feedback methods

fixes for merge conflicts

fixed issues with plan and user changes

fixed issue with notes controller test

fixed issue with phase controller test

conditional_user_mailer concern for delivering email according to preferences. DMPRoadmap/roadmap#811 ...

unit test for the concern. DMPRoadmap/roadmap#811

deliver_if recipients keyword accepts User or Array of Users. DMPRoadmap/roadmap#811

conditional email for users.new_comment, owners_and_coowners.visibility_changed. DMPRoadmap/roadmap#811

conditional email for users.added_as_coowner. DMPRoadmap/roadmap#811

conditional email for admins.feedback_requested. DMPRoadmap/roadmap#811

Merge pull request #844 from DMPRoadmap/issue155 ...

Adjusted front-page content for #155