- Refactoring: Avoid unnecessary addEventListener false; change internal

jPicker function to class (used with `new`)
- Linting (ESLint): Add `valid-jsdoc` rule and make fixes; but turn off for
  now due to <https://github.com/eslint/eslint/issues/11036> and
  <https://github.com/eslint/eslint/issues/11037>
- Docs (JSDoc): Add some Markdown for variables, line breaks; tighten checks
  for overly generic types (though allow for `.Function` as in
  `jQuery.Function`) and avoid one previously missed instance

editor/typedefs.js

@@ -20,10 +20,10 @@
 * This should only be used for objects known to be potentially arbitrary in form.
 * For those whose determination has not yet been made, simply use type `object`
 * (or type `?` if it may also be a primitive).
-* @typedef {object} ArbitraryObject
+* @typedef {Object} ArbitraryObject
 */
 /**
-* @typedef {object} ArbitraryModule
+* @typedef {Object} ArbitraryModule
 */
 /**
 * This should only be used for objects known to be potentially arbitrary in form,