Create a new freemarker script based on the STK's internalTeaser.ftl and associated paragraph and dialog definitions to allow content authors more control over displaying teaser content.

Authors should be able to select:

1. whether a teaser should be highlighted
2. whether to hide the kicker
3. image location @see MTWIGS-16

Additionally, we should improve the way the heading for link lists within teasers work. For instance, if def.headingLevel is h3 then the titleLevel used by the link list should be h4. In the current STK implementation, titleLevel is hard coded as an h3.