Modules with spaces in their path cannot be browsed by module browser

Since SVN supports paths to modules with spaces, this to me seems quite
important for acceptance. Setting SVNURL works. (I think there may be a bug
if the module has a space... I think the workaround is to use %20)..

But, the module browser can't handle spaces. However, it is possible to
specify the destination in the main "Select SVNURL..." window, THEN hit
[...] to browse the modules beneath, and it works.

For full usability, we need to browse paths with spaces.