bedeviled mojo slop

General:
- blojsom now requires Java 1.4.x as it now uses some of the Java 1.4 regular expression support
- Added the blojsom favicon.ico file and references in the html JSP and Velocity templates
- main.css was renamed to blojsom.css to avoid potential conflicts with existing style sheets
- dispatcher-map.properties was changed to dispatcher.properties
- Added Blog(Properties blogConfiguration) to the Blog class and removed previous Blog constructor
- Removed intermediate category output in html JSP template
- blog-file-extensions now takes a comma-separated list of regular expressions, rather than simply file extensions
- Added blog-directory-filter to blojsom.properties, which takes a comma-separated list of regular expressions for directories to filter when generating the category list
- Correctly placed requested category BlogCategory object on the context
- Powered-by logo is now href'd to http://blojsom.sf.net
- Images for RSS 0.92 and RSS 2.0 added with hrefs to the RSS feed for the current category
- Each flavor has a <link/> tag for RSS harvesters
- blojsom can now generate RSS 2 feeds. flavor=rss2

The following bugs were fixed:
BUG 689070: ClassCastException in rss.jsp
BUG 691221: All URIs need trailing /

The following RFEs were addressed:
RFE 684341: blog-file-extensions -> blog-file-name-pattern