Go back to "Change the URL shortener to is.gd for now."

This reverts commit 828ecbe351290ad3df2d85215fbdbb9daf128105.
Shorten: Remove "spice from =>"
Shorten: Remove console.log.
Merge branch 'master' into jag/is.gd
Merge pull request #179 from duckduckgo/jag/is.gd

is.gd endpoint for the URL shortener plugin.