Add some examples of leveraging Parsoid metadata
Add some examples of leveraging Parsoid metadata

- remove specific template output
- remove specific extension content

Change-Id: I128ddaab2a246c4e3d90f90f2794588785791d29

wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps