Begin of /User refactor - ignitersinstall updated.
Refactoring getenv("HOME") to predefined DEFAULT_HOME_DIR
Slash refactor.  More in details

* Fix // in paths once, for good.
* Get rid of uid usage in code. Avoid environment tricks.
Commented out old API of utils and shell.
Defined standard ports for default igniters.
Perform disconnection of signals before deleteLater call.
Updated default value in test.
Clean test leftovers.
Fix for call to SvdProcess with changed API
More fixes and code improvements.