clean up last of undefined vars.
switched "unused" to true and "indent" to 4 in .jshintrc
ignoring of `config` directory in build
so config files are readable and editable.
switched "unused" to "strict" and found additional undefined vars
(those followed by a used parameter.)
previous setting of unused: true allow unused parameters that are
followed by a used parameter.

added /*jshint unused:true */ to StreetView and async files as required
for passed middle var that is unused but cannot be removed.
update package.json for release 1.3.0.