[Fix] Legacy API Package Endpoint, Pepper Unit in Pathway View (#399)

Co-authored-by: Tim Lorsbach <tim@lorsba.ch>
Reviewed-on: enviPath/enviPy#399

static/js/pw.js

@@ -463,7 +463,7 @@ function draw(pathway, elem) {
                     // TODO needs to be generic once we store it as AddInf
                     for (var s of n.predicted_properties["PepperPrediction"]) {
                         if (s["mean"] != null) {
-                            tempContent += "<b>DT50 predicted via Pepper:</b> " + s["mean"].toFixed(2) + "<br>"
+                            tempContent += "<b>DT50 predicted via Pepper:</b> " + s["mean"].toFixed(2) + " days<br>"
                         }
                     }
                 }