Update navbar links
update submission model
Merge front_end branch with master
Merge requirements branch with master
Update navbar assessments dropdown menu
Fix navbar header styling
update navbar routes
Merge pull request #2 from asteward/requirements

Requirements
WIP Assessment tabs
Merge front_end to master
Merge pull request #3 from asteward/grades

Grades
create tabs for each assessment that display requirements and a submission form
merge grades with master
Merge branch 'master' of https://github.com/asteward/epissessments

merge grades with master
Fix assessment tab display error
update root pages based on user role
pull in changes
Merge branch 'master' of https://github.com/asteward/epissessments

Update root redirects
add create grades per requirement functionality