Updated the implementation of the importJobs localization service method to no longer use the Uize.mergeInto method and use the Uize.Data.Diff.diff method instead, since the latter method can allow us to ignore values from the translation job file that are empty (not translated), and also to support merging in sparsely populated string arrays (Uize.mergeInto actually doesn't support array merging, so the string arrays were just getting completely replaced).