SLNFileIDAndSessionID table, currently unused.
SLNFileIDAndSessionID table, currently unused.

It's okay to change some other table IDs since we haven't used them yet.

We decided to use {fileID, sessionID} instead of {sessionID, fileID} simply because recent files will be more clumped together. Otherwise it doesn't seem to matter. And this way sessionID is always secondary, which makes sense...?

btrask/stronglink,btrask/stronglink,btrask/stronglink,btrask/stronglink