Add current/all users/hosts properties to custom host's $PROFILE

[dahlbyk]

As discussed in dahlbyk/posh-git#358 (comment), the Chocolatey custom host (introduced in 480cf4b) does not set the extra NoteProperty values normally found on a $PROFILE.

The Chocolatey host's $PROFILE is currently set to the CurrentUserCurrentHost value for the default shell (Microsoft.PowerShell). I propose restoring all four standard NoteProperty values, with CurrentHost values aligned with the default shell.

Relevant PowerShell code:

• Creating $PROFILE
• HostUtilities.GetFullProfileFileName()
• Utils.GetApplicationBase() for AllUsers location

[ferventcoder]

@dahlbyk I love it. Also added this to "Up For Grabs" - hint hint ;)