XCOMMONS-1179: Indicate the job type in the job status

...sion/distribution/internal/job/DistributionJobStatus.java

.../distribution/internal/job/FarmDistributionJobStatus.java

.../distribution/internal/job/WikiDistributionJobStatus.java

...va/org/xwiki/extension/xar/job/diff/DiffXarJobStatus.java

...atform/flavor/internal/job/DefaultFlavorSearchStatus.java

...java/com/xpn/xwiki/internal/WikiInitializerJobStatus.java

...ava/com/xpn/xwiki/internal/XWikiInitializerJobStatus.java

...org/xwiki/refactoring/internal/job/AbstractEntityJob.java

...in/java/org/xwiki/refactoring/internal/job/CreateJob.java

...in/java/org/xwiki/refactoring/internal/job/DeleteJob.java

...main/java/org/xwiki/refactoring/internal/job/MoveJob.java

.../main/java/org/xwiki/refactoring/job/EntityJobStatus.java

...rc/main/java/org/xwiki/refactoring/job/EntityRequest.java

...ava/org/xwiki/refactoring/internal/job/EntityJobTest.java