Merge pull request #44 from tbabej/master

ajaxcomments.js: Do not clear the whole container on adding comment
Updated AUTHORS with all contributors.

Thanks @Kobold, @mickael9, @PetrDlouhy, @rosscdh, @tbabej, @baffolobill,
@bee-keeper and @rchrd2 for your patches!
Bump version to 1.0b1
Support showing comments in reversed order