Don't encode filenames twice (fixes #454)
Encode filename in `getItemURL`
using RS.WireClient.cleanPath in baseclient and fixing baseclient testsuite to be compatible with that
including WireClient into baseclient-suite.js to make ceanPath available
Cleanup
Merge pull request #456 from remotestorage/bugfix/double_encoding

Don't encode filenames twice (fixes #454)