Issue: Wrong URL encoding with Cyrillic & UTF-8

Just installed the free version to try it before buying the Premium, and found that the Cyrillic characters in the links are displayed incorrectly (I use UTF-8 encoding; VaultWiki version is: 3.0.7 Lite).

For example, I have a topic with title: КОМПРЕССИЯ
Expected that a link to Wiki should look like this: /showwiki.php?title=КОМПРЕССИЯ
However, as a result I see this link: /showwiki.php?title=DjsDjzDjoeDjyDj+Dj+Dj+Dj+Dj+Dj

Everything works, but it looks bad for the search engines.

I played a little with the urlencode() function and discovered that to properly display Cyrillic I need to force the unicode-mode in preg_replace() by adding "/u" flag, and also to comment lines #696 and #723. However, when links are displayed correctly with Cyrillic, they stop working and just open up blank articles ("There is currently no text in this page").

Not sure that this is the same problem as here, so I created a new bug-report.

Thank you!