Do not open Page Properties in fullscreen

[#1]

Request for Feature Enhancement (RFE) Summary:	Do not open Page Properties in fullscreen
Use-case:	Users provide images in the page properties to be used by teasers, og:image, etc.
Current/Experienced Behavior:	In AEM page editor, when one opens the page properties, the dialog is opened full-screen. I.e. It covers the Asset selector on the left rail. This means a user cannot use the search, filter and drag&drop capabilities the asset dialog offers. If more than one page is to provided with the same image, a user has to open each page and browse to the asset individually.
Improved/Expected Behavior:	Keep the left editor rail visible and open the properties dialog in a modal lightbox or only covering the page.
Environment Details (AEM version/service pack, any other specifics if applicable):	AEMaaCS latest and AEM 6.5
Customer-name/Organization name:	all
Screenshot (if applicable):	Desired behavior:
Code package (if applicable):