Added Validation Redirects

Tests to see who is logged on, if they are student sends them to the
studentDash, if they are a teacher sends them to the teachDash. If it's
run on local host right now it should just fall through unless the
session ID is being set else were.
Revert "Added Validation Redirects"

This reverts commit 36b4c914fefcd61218b94dcdd5efa2f14bc1e923.
Added Validation

Added user validation redirects to the C# of the master page. When run
on the server it will should send you to the correct dash board page.
When run on local host it will fall through and let you go to the page.
Changed teacherDash to use the right master page.