Rename detail/list templates to form/display templates respectively

1.) Both

https://github.com/brianchandotcom/liferay-plugins/pull/1030
https://github.com/brianchandotcom/liferay-portal/pull/7396

had the wrong commit message. I changed them to LPS-30610 from LPS-30616 before actually pushing to upstream.

2.) We need to degrade this gracefully. In

https://github.com/brianchandotcom/liferay-plugins/pull/1030

We show that we changed the stored preferences. That means, we have to either a.) upgrade those preferences, see BaseUpgradePortletPreferences (it's in portal-service so you can use it in a plugin, see the classes that extend it) or b.) lazy get the older value.

So when you get the new value, if it's not set, get the old one as the default.

In preparation for Ideation; we are merging New Feature and Improvement tickets into a singular ticket type called “Feature Request”.

This ticket has been converted to story ticket type for you; so that the ticket may continue to progress through the workflow properly.

However these tickets were not writing in the proper story format. Please format this ticket to story standards.

Code already in master. Ready for PM review