Changes to Default Performer Images (for Accessibility) (#1489)

* Changes to support custom URL paths
* Refactor image resolver code
* Initialise box files at startup
* Update packr

Co-authored-by: WithoutPants <53250216+WithoutPants@users.noreply.github.com>

vendor/github.com/gobuffalo/logger/terminal_check.go

@@ -6,13 +6,13 @@ import (
 	"io"
 	"os"
 
-	"golang.org/x/crypto/ssh/terminal"
+	"golang.org/x/term"
 )
 
 func checkIfTerminal(w io.Writer) bool {
 	switch v := w.(type) {
 	case *os.File:
-		return terminal.IsTerminal(int(v.Fd()))
+		return term.IsTerminal(int(v.Fd()))
 	default:
 		return false
 	}