Update url when range/until changes, or encode entire URL is
checked/unchecked.
Stop selecting refresh timer from erasing URL query/hash.
encode widget status into url.
Merge pull request #245 from prometheus/keep-url-updated

Update url when range/until/encode entire URL changes
Build api url properly instead of concatenation
Fix incorrect url for pie charts.
Merge pull request #246 from prometheus/fix-server-url-parsing

Build api url properly instead of concatenation
Expand graphite urls.