User interface now uses new tools

Location will be required to complete the transfer for some stategies. Also, filtering on each transfer may need the full file name, not just the stripped out run number, so lets move that to the model.

The catalog searcher used to pre-filter out anything but raw files. This is a problem because our filtering depends on the transfer strategy. Instead. We defer the filtering util the model is displayed, and we use the TransferStrategy to tell us which files we can use in our transfer list.

This commit fundamentally changes the behaviour of ReflSearchModel.
Instead of merely wrapping a ITableWorkspace, it copies the data it
cares about out of the workspace and then forgets about it. The main
reason for doing this is the lack of sorting functionality in the
TableWorkspace class. Weighing things up, the simplest way forward is
simply to look after the data we care about ourselves and manage it
internally.