Error caused when user loaded the degree planner (thus initializing the termcode factory), switched to the dars view (which doesn't reset the termcode factory), then switched back to the degree planner (which attempted to initialize an already initialized termcode factory).

This fixes the bug by only attempting to initialize the termcode factory if the termcode factory is uninitialized

- Creates DARS view as a child view of the degree planner
- Moves constants resolver services into the degree planner router instead of the app router
- Updates the navigation links so that the degree planner link and the dars link will be appropriately marked as "active"

Remove dev logging

load subject mapping before degree plan terms are loaded