Fix the "clearing passwords in 45s" function

- Copied passwords in the extension are not cleaned.

pass/Controllers/PasswordDetailTableViewController.swift

@@ -391,7 +391,7 @@ class PasswordDetailTableViewController: UITableViewController, UIGestureRecogni
         
         // copy HOTP to pasteboard (will update counter)
         if let plainPassword = password!.getNextHotp() {
-            Utils.copyToPasteboard(textToCopy: plainPassword)
+            SecurePasteboard.shared.copy(textToCopy: plainPassword)
         }
         
         // commit the change of HOTP counter
@@ -413,7 +413,7 @@ class PasswordDetailTableViewController: UITableViewController, UIGestureRecogni
             }
             return;
         }
-        Utils.copyToPasteboard(textToCopy: password?.password)
+        SecurePasteboard.shared.copy(textToCopy: password?.password)
         UIApplication.shared.open(url, options: [:], completionHandler: nil)
     }
 
@@ -480,7 +480,7 @@ class PasswordDetailTableViewController: UITableViewController, UIGestureRecogni
     
     override func tableView(_ tableView: UITableView, performAction action: Selector, forRowAt indexPath: IndexPath, withSender sender: Any?) {
         if action == #selector(copy(_:)) {
-            Utils.copyToPasteboard(textToCopy: tableData[indexPath.section].item[indexPath.row].content)
+            SecurePasteboard.shared.copy(textToCopy: tableData[indexPath.section].item[indexPath.row].content)
         }
     }
     

pass/Controllers/PasswordEditorTableViewController.swift

@@ -189,7 +189,7 @@ class PasswordEditorTableViewController: UITableViewController, FillPasswordTabl
         }
         let length = passwordLengthCell?.roundedValue ?? 0
         let plainPassword = Utils.generatePassword(length: length)
-        Utils.copyToPasteboard(textToCopy: plainPassword)
+        SecurePasteboard.shared.copy(textToCopy: plainPassword)
         
         // update tableData so to make sure reloadData() works correctly
         tableData[passwordSection][0][PasswordEditorCellKey.content] = plainPassword

pass/Controllers/PasswordsViewController.swift

@@ -370,7 +370,7 @@ class PasswordsViewController: UIViewController, UITableViewDataSource, UITableV
             do {
                 decryptedPassword = try self.passwordStore.decrypt(passwordEntity: passwordEntity, requestPGPKeyPassphrase: self.requestPGPKeyPassphrase)
                 DispatchQueue.main.async {
-                    Utils.copyToPasteboard(textToCopy: decryptedPassword?.password)
+                    SecurePasteboard.shared.copy(textToCopy: decryptedPassword?.password)
                     SVProgressHUD.showSuccess(withStatus: "Password copied, and will be cleared in 45 seconds.")
                     SVProgressHUD.dismiss(withDelay: 0.6)
                 }