Do not select deleting frame in delete-frame-functions
Add failing scenario: Stop one of managed frame
Refactoring: add e2wm:other-managed-frames
Window management can be stop per frame basis now
Add two passing scenarios for frame management
Add a scenario for restoring display-buffer-function
Enable original display-buffer-function in unmanaged frame

This fixes the previously failing scenario.
One more scenario for display-buffer-function
Fix failing test due to incomplete cleanup
Add Scenario: Forcefully disable multiple frames (failing)
Better termination when forcefully stopping management
Merge pull request #57 from tkf/stop-management

Fix bugs regarding stopping management