Error Checking Evora

[tristan3214]

Add error checking into the server if a call to the Andor drivers is unsuccessful. Error will be captured and returned to the client so that they can handle the issue appropriately. An example would be if an acquisition fails the client will stop their timer and pop up that there was an issue with the camera.

[tristan3214]

There is currently minimal error checking in Evora, in that if it fails it will likely fail silently. Future versions of the server will raise exceptions, as well as attempt to shutdown the camera if this happens.