possible fix for navbar bottom border line

@@ -94,6 +94,8 @@ import SwiftEventBus
         
         swiftApi().logTrackersEvent("screen", "ContextualScreen")
         
+        self.navigationController?.hideHairline()
+        
     }
 
     

@@ -312,6 +312,7 @@ import AVFoundation
         
         swiftApi().logTrackersEvent("screen", "CouponScreen")
         
+        self.navigationController?.hideHairline()
     }
     
     public func textView(_ textView: UITextView, shouldInteractWith URL: URL, in characterRange: NSRange, interaction: UITextItemInteraction) -> Bool {

@@ -143,6 +143,7 @@ import SwiftEventBus
         
         swiftApi().logTrackersEvent("screen", "CouponsetScreen")
         
+        self.navigationController?.hideHairline()
     }
     
     public func textView(_ textView: UITextView, shouldInteractWith URL: URL, in characterRange: NSRange, interaction: UITextItemInteraction) -> Bool {

@@ -44,6 +44,7 @@ import SwiftEventBus
         self.coupons = swiftApi().getCouponList()
         self.tableView.reloadData()
 
+        self.navigationController?.hideHairline()
     }
     
 

@@ -98,6 +98,8 @@ import SwiftEventBus
         self.refreshData()
 
         self.startTimer()
+
+        self.navigationController?.hideHairline()
     }
 
     public override func viewWillDisappear(_ animated: Bool) {

@@ -67,6 +67,8 @@ import SwiftEventBus
         swiftApi().logTrackersEvent("screen", "LoyaltyHistoryScreen")
         
         self.startTimer()
+
+        self.navigationController?.hideHairline()
     }
 
     public override func viewWillDisappear(_ animated: Bool) {

@@ -89,6 +89,8 @@ import SwiftEventBus
         self.refreshData()
 
         self.startTimer()
+
+        self.navigationController?.hideHairline()
     }
 
     public override func viewWillDisappear(_ animated: Bool) {

@@ -108,6 +108,7 @@ import MapKit
         
         swiftApi().logTrackersEvent("screen", "ShopsScreen")
         
+        self.navigationController?.hideHairline()
     }
     
     // mvp

@@ -68,6 +68,8 @@ import SwiftEventBus
         swiftApi().logTrackersEvent("screen", "LoyaltyHistoryScreen")
         
         self.startTimer()
+
+        self.navigationController?.hideHairline()
     }
 
     public override func viewWillDisappear(_ animated: Bool) {

@@ -122,6 +122,7 @@ import SwiftEventBus
         
         swiftApi().logTrackersEvent("screen", "CouponShareScreen")
         
+        self.navigationController?.hideHairline()
     }
     
     deinit {

@@ -345,6 +345,7 @@ extension UITableView {
         
         swiftApi().logTrackersEvent("screen", "UnifiedCouponScreen")
         
+        self.navigationController?.hideHairline()
     }
     
     public func textView(_ textView: UITextView, shouldInteractWith URL: URL, in characterRange: NSRange, interaction: UITextItemInteraction) -> Bool {

@@ -426,6 +426,7 @@ import SwiftEventBus
         swiftApi().logTrackersEvent("screen", "LoyaltyWalletScreen")
 
         // addNavShadow()
+        self.navigationController?.hideHairline()
         
         let userTag = swiftApi().getUserTag()
         if (questionnaireButton.currentTitle != userTag) {