Background imports

SchoolTool should send a response immediately when imported data is done uploading then process the data asyncronously server side. This would reduce or eliminate timeouts when uploading data from the web interface. A UI element would probably be needed to keep track of the data as it is processing, but adding this feature would get rid of a major frustration encountered when using SchoolTool with a flaky network connection.

Example

An administrator wants to import a large dataset over a proxy server.

Current:Currently when she does this, the file will upload, but the connection may time out during the processing, causing her to have to start all over.

Proposed fix: The server returns a "upload complete" message, and puts a UI element such as "processing data" to the side of the screen.Since the data is being processed without maintaining a connection to the client, there will be not be as many issues with timeouts.