Fix a number of lint warnings from new-improved-blint

addon/display/rulers.js

addon/search/searchcursor.js

addon/tern/worker.js

keymap/vim.js

lib/codemirror.js

mode/apl/apl.js

mode/asterisk/asterisk.js

mode/cypher/cypher.js

mode/dylan/dylan.js

mode/ecl/ecl.js

mode/eiffel/eiffel.js

mode/htmlmixed/htmlmixed.js

mode/julia/julia.js

mode/livescript/livescript.js

mode/pig/pig.js

mode/tiddlywiki/tiddlywiki.js

mode/tiki/tiki.js

mode/xquery/xquery.js