Check and change status of deploy lock from web interface

[jamesmontalvo3]

Running deploy (either manually or via autodeployer) creates a lock file preventing other deploys from starting. If something goes wrong and doesn't cleanup that lock file after a deploy is over, there should be a way to manually remove it via the web interface such that SSH isn't required to unlock. Perhaps this could check the time of the deploy and make sure TBD time has passed since it started before allowing the unlock command.