Make script messages around process restarts consistent

The message we output when a process is restarted is inconsistent:

standalone.sh "Restarting application server..."
domain.sh "Restarting JBoss..."
standalone.ps1 "Restarting application server..." (from common.ps1)
domain.ps1 "Restarting application server..." (from common.ps1)
standalone.bat nothing
domain.bat nothing

Problems:

1) domain.ps1 is inaccurate as it's not just an application server being restarted
2) The bat files are inconsistent with the others
3) domain.sh's "Restarting JBoss..." is a bit vague and is odd theoretically given that WildFly Core is meant to be usable for all sorts of things that may not be regarded as "JBoss".

Perhaps just KISS "Restarting..." in all cases? If we want to keep "application server" for the standalone.xxx cases then common.ps1's function will need to have a param added, and then we need to decide a meaningful value for that param (empty text being a valid choice.)