Tag-pages with non-ascii characters are empty

[pesasa]

In my native language (Finnish) we have some non-ascii characters (åäö) that are used frequently. If I use those in tags, like #työpöytä, the page /tag/työpöytä will just show empty page.

There is a workaround by using html entities for special characters instead of real utf-8-characters. However, we are living 2015 and I think we should be able to write characters directly as they are.

The problem comes from line 93 where

$this->current_tag = htmlentities(urldecode($current_tag_raw), 0, "UTF-8");

first urldecodes the tag and then converts non-ascii characters to html entities. Is this conversion needed for some reason? If I change this to:

$this->current_tag = urldecode($current_tag_raw);

my tags seem to work. Does this break something else?

[pschmitt]

PR please.