Issue tracker components, versions, milestones not url encoded in links (BB-7017)

Issue #5744 resolved
George Steel
created an issue

Given a component of "Some Thing & Another", links to list issues within that component do not get escaped so the url ends up as https://bitbucket/foo?component=Some+Thing+&+Another - this causes issues where of course the searched component is "Some Thing " as opposed to "Some Thing & Another"

This may also affect Milestones but I haven't checked that out