Fix for components with unicode characters preventing rendering of the milestone view. Fixes #616.

The milestone view shows a list of components, and the milestone view would not render due to an improperly encoded href string. URL encoding of the query href parameters did not account for the possibility that the parameters could be unicode strings.

git-svn-id: https://svn.apache.org/repos/asf/bloodhound/trunk@1508449 13f79535-47bb-0310-9956-ffa450edef68