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ImageMap was deprecated in 1.4.11 and in 1.5 it was replaced with ClientSideImageMap component
getResourceSettings().setAddLastModifiedTimeToResourceReferenceUrl() has been replaced
With https://issues.apache.org/jira/browse/WICKET-3028 and https://issues.apache.org/jira/browse/WICKET-3021 this method was removed. The timestamp, which previously was added as a query parameter to the resource url is not part of the filename. This has several advantages and will most notably result in better caching support and reload on change. It is enabled by default so unless you want to disable it with void getResourceSettings().setUseTimestampOnResources(boolean) or query it with getResourceSettings().getUseTimestampOnResources() you don't have to care about it. It only works when the ResourceReference return a non-null timestamp for method getLastModified() which will always work for package resources (and wicket:link).
List of renamed classes and methods
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