Main entry into the SQL Bookmark plugin.
This plugin allows you to maintain a set of frequently used SQL
scripts for easy playback. There is also a parameter replacement
syntax available for the SQL files.
author: Joseph Mocker
Returns the name of the change log for the plugin. This should
be a text or HTML file residing in the getPluginAppSettingsFolder
directory.
the changelog file name or null if plugin doesn't havea change log.