Issue SVY-11517 added property 'servoy.server.queryUseLastResultset', if that is set to true then most of the queries servoy executes on the database will be done with a different command so that the query can result in mulitiply result sets. This way if getDataSetByQuery() would execute more a stored procedure then really one sql statement, it still will return something (the last result set). For example the real driver of Microsoft will not allow this in the normal execute.
NGClient templates for certain stuff like error pages can be overriden completely like described here or keep the default templates and redirect only smaller parts of it described here. That last one just means that you can have any kind of filename and you fill that filename in on the admin page for that property.
We have support for Progress database sequences: SVY-11353
If you spit up or use many css files from the solutions main css by using import statements in the main css file, browser caching can be a problem when you redeploy. Now you can give the url of the import a special parameter, which Servoy will be replacing when generating the WAR: Css URL Import