goalVC now also respects safe area (#495)

goal view controller was not respecting the safe areas. This meant, for
example, that the graph was partially hidden behind the Dynamic Island.

BeeSwift/GoalViewController.swift

@@ -62,13 +62,12 @@ class GoalViewController: UIViewController,  UIScrollViewDelegate, DatapointTabl
 
         self.view.addSubview(self.scrollView)
         self.scrollView.snp.makeConstraints { (make) -> Void in
-            make.top.equalToSuperview()
-            make.left.equalTo(0)
-            make.right.equalTo(0)
-            make.bottom.equalTo(0)
+            make.top.equalTo(self.view.safeAreaLayoutGuide.snp.topMargin)
+            make.left.equalTo(self.view.safeAreaLayoutGuide.snp.leftMargin)
+            make.right.equalTo(self.view.safeAreaLayoutGuide.snp.rightMargin)
+            make.bottom.equalTo(self.view.safeAreaLayoutGuide.snp.bottomMargin)
         }
 
-
         self.scrollView.refreshControl = {
             let refreshControl = UIRefreshControl()
             refreshControl.addTarget(self, action: #selector(refreshButtonPressed), for: .valueChanged)