If you love summer more than any other season, the first weekend in June should mean something -- and if you find yourself having fun and spending wee amounts of green, you'll likely remember this weekend fondly while trudging through the slush of February. Here's our best attempt at directing you to cheap fun around St. Louis. We'll start with a bonus item of our own: For $5, you can see more than 60 of the best local bands, from 1 p.m. to midnight on Sunday, as part of the RFT Music Showcase i