First Informa beta release (0.4.0)

This is the first beta release (0.4.0) of the Informa RSS library, which provides now a hibernate backend in place (see de.nava.informa.impl.hibernate) as well as a OPML Parser (supporting version 1.1) to read in feed collections.

Sam added his FeedManager (under de.nava.informa.utils), while I simplified the feed parsing to avoid unnecessary parser
collection and pre-format detection.

A special thanks to Pito Salas, who helped a lot to identify the remaining hibernate issues. Hope you enjoy the improvements and looking forward to your feedback concerning the new hibernate persistance implementation.

-- Niko