Provide option to use svg source instead of img tag

Problem/Motivation

Being able to bring the svg into the render provides some advantages over use of an img tag. Primary is styling/colors being controllable with CSS, but it also allows animated svgs to comply with animation accessibility CSS media queries.

The icon API has this built in with the svg extractor, and something similar could be implemented here as well with a configuration flag and some alternate templating.

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes