v1.04 - Private Usage, Lesson Modifications, Single Page (Lessons), and Sidebar Right Changes

Private Usage
- Only allow “Teacher” and above user roles
- Custom “Maintenance” Page

Lessons
- Added META fields for PREVIOUS & NEXT buttons

Single Page (lessons)
- Removed all AUTHOR information
- Added Current Subject / Grade / Unit / Lesson
- Added PREVIOUS and NEXT Lesson buttons
- Added Revision Date
- Cleanup Code

Sidebar - Right
- If “Sidebar Item” added a “BACK” button

Fixes
- Home Page Go to Lesson Fail Over

Signed-off-by: mtaddei2 <mtaddei2@fairfieldschools.org>