Content related changes needs OFBiz server restart

As per discussion on Dev ML

==========================
Its related to FreeMarkerWorker.renderTemplateFromString.

DataResourceWorker call the FreeMarkerWorker.renderTemplateFromString
if dataTemplateTypeId is FTL,

and pass the lastUpdatedStamp to update the ftl cache.

But if you use ftl file as objectInfo so lastUpdatedStamp will not
change if you update the ftl file

<DataResource dataResourceTypeId="URL_RESOURCE"
objectInfo="component://.../File.ftl" dataTemplateTypeId="FTL"
dataResourceId="TEST"/>

=========================