LPS-50442 - Migrate Journal portlet aui-base javascript

Hi Rob,

Attached is an update for https://issues.liferay.com/browse/LPS-50442.

I split off a couple of changes into separate commits that included more than just the jquery migration.  

9f97481 - abstract.jsp had some really strange logic going on for the small image upload.  
af4d2ed - edit_feed.jsp had a couple functions that I couldn't find being used anywhere.

Please let me know if there are any issues.

Thanks!