Create manager role and limit default role (#351)

* added manager role to options

* block default role from editing workspace settings on workspace and text input box

* block default user from accessing settings at all

* create manager route

* let pass through if in single user mode

* fix permissions for manager and admin roles in settings

* fix settings button for single user and remove unneeded console.logs

* rename routes and paths for clarity

* admin, manager, default roles complete

* remove unneeded comments

* consistency changes

* manage permissions for mum modes

* update sidebar for single-user mode

* update comment on middleware
Modify permission setting for admins

* update render conditional

* Add role usage hint to each role

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Co-authored-by: timothycarambat <rambat1010@gmail.com>