Implement the startingSidebarTab setting (closes #3)

langs/en-ca.json

@@ -12,6 +12,13 @@
 			"startSidebarExpanded": {
 				"name": "Start Sidebar Expanded",
 				"hint": "(v13+) Starts the right-hand sidebar expanded when logging in."
+			},
+			"startingSidebarTab": {
+				"name": "Starting Sidebar Tab",
+				"hint": "(v13+) Determines what sidebar tab to have selected initially when loading Foundry",
+				"choices": {
+					"blank": "No Custom Default Tab"
+				}
 			}
 		}
 	}