Adds homepages for each role

[joshwingreene]

Changes

1. Added a HomeRoutes component that will render each homepage depending on the user's role. It is route guarded by the RequireAuth component.
2. Added relevant translations for each homepage
3. Added a Home nav button. This will cause the user to navigate to the "/" route path, which is handled by the HomeRoutes component.
4. Changed the icon of the Directory nav button
5. Clicking on the BW icon will now direct the user to the "/" route path

Purpose

• Added homepages for each role

Testing Steps

1. Pull in the changes to your local copy of this branch and run it alongside the dj_starter_demo repo.
2. Navigate to the home page and change the current language to Spanish
3. Create either an editor or a user and navigate to the home page

Screenshots

[joshwingreene]

Each role in the system should have their own Homepage