SqlCE support to enable proper Umbraco Cloud compatibility

` Keyword not supported: 'flush interval'.`
That's the error you get when you try to run Hangfire on SqlCE.
As you may know, local Umbraco Cloud development is with SqlCE.

I would love to see Hangfire compatible with UC. I know this is not a bug as Hangfire doesn't support UC. This is a feature/enhancement suggestion. What would it take?

Start by reproducing the `flush interval` error when running Hangfire on SqlCE, then trace which storage component issues that connection option. Compare the required behavior with Hangfire's existing storage support and define what compatibility with local Umbraco Cloud would require. Done means Hangfire runs correctly against SqlCE without the reported unsupported-keyword failure.

Written by the indexing model from the issue text.