Variable Name Standarization

Panels/TimeControlPanel.js

@@ -37,7 +37,7 @@ function newTimeControlPanel () {
     panelTabButton.container.frame.parentFrame = thisObject.container.frame
     panelTabButton.initialize()
 
-    let datetime = INITIAL_DATE
+    let datetime = NEW_SESSION_INITIAL_DATE
 
     let datetimeDisplay = {
       currentDatetime: datetime,