Reindent and rehighlight the preview when editing/creating a post
Fixed issue with parsing
What happens here is that the regexp parser will append a ; character
after < or &. I have no idea why this fixes it but it does seem to be
the culprit.
Made the editor use the same CSS as the post
This way, you have a better feeling how your post looks like as it
reflects how it's going to be rendered.
Fixed logout button and gave it some texture