Adding in many-to-many between users and projects
Merge branch 'development' of github.com:Wordseer/wordseer_flask into collaboration
Document view no longer takes a project id
Added human-readable role descriptions to ProjectsUsers.
Added project permissions template.
Added permissions forms
Added permissions view
Added link to permissions from document view
Updated form validation for CUD
Fixed issue causing wtforms to complain
Added uploader tests
Permissions screen functions now all working
Added unit test for permissions access from collaborators
Collaborating users can no longer delete or process or tag.
Fixed conflicts between permission fields
User and Admin instead of can edit/can view
Fixed unit tests
At least one user will always be an admin on a project now
Fixed global project name conflicts
Error message on adding a nonexistant collaborator is more useful