LPS-50352 - Password generator portlet does not adhere to 'lower case letters' or 'upper case letters' checkboxes

Hi Jon,

Attached is an update for https://issues.liferay.com/browse/LPS-50352.

@DrewBrokke and I worked on this one and decided it didn't really make sense for the 'Numbers' input to be a select box, and the Upper/lower case inputs to be checkboxes.  We made them all checkboxes and fixed the original bug.  If you think the select box should remain, you can leave off the most recent commit (974560f).

Please let me know if there are any issues.

Thanks!