Moved Offline OP to use controllers.
Greatly simplifies ApplyHeaders method.
Revise receiver of ApplyHeaders extension method.
Unit test build break fixes.
Many more unit test build fixes and product touch-ups.
More test build break fixes.
More test build break fixes.
More unit test fixes.
More build break fixes.
Lots more test build break fixes.
Adds missing file.
Fixes the rest of the build breaks!