Autotagger plugin should url-decode tags

[mbonetti]

If someone chooses tags with umlauts (e.g. very common in germany), then the link should be urlencoded in the href-section of the link. And the description of the tag (the part between > and </a>) could be written with html-entities.

This is the way it should be, i think.

If it is this way, then the plugin should decode the tag, if it is extracted from the href-part or handle it an other way, if it's extracted from the description-part.

test case

[mbonetti]

fixed in version 0.5