function isOutsideInput(element) {
  return isInput(element) && element.className.indexOf('handsontableInput') === -1 && element.className.indexOf('copyPaste') === -1;
}
Determines if the given DOM element is an input field placed OUTSIDE of HOT.
Notice: By 'input' we mean input, textarea and select nodes

@param {HTMLElement} element - DOM element
@returns {Boolean}