How to dynamically serve manifest for GWT permutations
问题 Consider the following problem. You'd like to serve an offline manifest/appcache file for your GWT project. In such a case, there are two issues: GWT generates different permutations of js files (depending on browser version). When loading the application, some GWT javascript code uses your user-agent properties to include the appropriate one. You'll want to generate a different manifest file for each of these permutations, as you don't want to cache files you won't use (and these files can