Editor: "editor" on its own is too broad of a trigger

I was thinking that if I typed in "javascript editor," I would expect to see a list of text editors instead of an actual web-based editor.
Editor.pm: Add "code viewer" as a trigger.
Merge pull request #1148 from duckduckgo/jag/web-editor-triggers

Editor: "editor" on its own is too broad of a trigger