Apply Markdown converter 1.0.0 JAR to Knowlege Base Portlet

Hi Brian,

The JAR file, ivy.xml, and consequently the ivy.MD5 file needs to be updated for the branches mentioned below. If you'd rather I send you pulls for these other branches, please let me know.

liferay-plugins / 6.2.x
liferay-plugins-ee / ee-6.2.x
liferay-plugins-ee / master

Thanks!