subversion plugin does not handle uris including spaces nicely

When using a subversion VCS location whose uri contains spaces (as https://ideamksplugin.googlecode.com/svn/branches/IDEA 8.x/mks-idea-0.7), IDEA replaces the space with "%20" in a number or cases.

Of those the one I encounter the most frequently is when using the repository browser to select a branch for Integrating/merging.
The repository browser works as expected (eg doesn't display "IDEA 8.x" as "IDEA%208.x") but when selecting this node and clicking OK, the input field associated is set to "IDEA%208.x".

reported as http://www.jetbrains.net/jira/browse/IDEA-21151