Refactor SubmissionDispatcher class

[thiagoyeds]

what is a processingPhaseTag2. In fact, we need to add good docs related to this tag and digest stuff. I mean, with some examples. This is non-trivial stuff (so, need proper doc).

As I commented before, the code you added looks good to me but we need to refactor legacy code:

1. remove silly documentation (e.g. "This function adds new user." in a method called addNewUserInCatalog does not add much, so remove the setence)
2. remove dead code
3. overall, we have important code in classes name *Util (e.g. CatalogUtils) and ancillary code in the main classes (e.g. formatPathRow)

Originally posted by @thiagomanel in #59