Fixed an issue with the query "Hi."

"Hi" would result to "H.I."--an acronym that we don't really need.
To handle this, we need to put everything in lowercase, then check if it finds a match (I find that this works most of the time).
If it doesn't, we can always rely on Dictionary::Fallback to handle it.
But just in case Dictionary::Fallback fails, we have DDG.isRelevant.
Removed trailing comma.
"definition of: brobdingnagian" would fail because it would only strip "definition."
Added a comment.
Fixed "definition of:" problem.
fixed quixey <li> hover background
Changed test for the Airline plugin.
Added cursor: pointer to the Dictionary plugin.
allow unicode in IsItUp
allow protocols in IsItUp queries & update tests
removed https support from IsItUp-it's unsupported
IsItUp.com doesn't actually support unicode either

disabled the feature and tests for now :-/
Changed the name of Dictionary::Dictionary module.
Merge branch 'master' of github.com:duckduckgo/zeroclickinfo-spice
Added a new module called Dictionary::Define.
Merge branch 'master' into spice2
Finished Dictionary plugin.
Removed docs folder from Google+, Octopart, and SoundCloud.
Merge remote-tracking branch 'origin/spice2' into spice2