Introduce ability to use pandoc (or other external) for markdown-to-HTML
Add a --config mode to show the configuration being used
Pandoc mode fixed, default was wrong and display of 'ext' was broken
Keep output of ikiwikiToAtom() in python-native unicode for longer

Only convert to a byte-representation when necessary.
Include the character encoding in the http Content-Type header
Response code 302 message didn't include the 'gitblogger:' prefix
Fix some unicode sloppiness
Better log output
Major reorganisation of blog transmission into handler classes to support blogger or wordpress
Add support for blogger's post-by-email
Add a modifying post log message