Add ability to press missing token

Trust/Tokens/Coordinators/TokensCoordinator.swift

@@ -100,6 +100,10 @@ extension TokensCoordinator: TokensViewControllerDelegate {
         storage.delete(tokens: [token])
         tokensViewController.fetch()
     }
+
+    func didPressAddToken(in viewController: UIViewController) {
+        addToken()
+    }
 }
 
 extension TokensCoordinator: PaymentCoordinatorDelegate {

Trust/Tokens/ViewControllers/TokensViewController.swift

@@ -6,6 +6,7 @@ import StatefulViewController
 import Result
 
 protocol TokensViewControllerDelegate: class {
+    func didPressAddToken( in viewController: UIViewController)
     func didSelect(token: TokenObject, in viewController: UIViewController)
     func didDelete(token: TokenObject, in viewController: UIViewController)
 }
@@ -102,8 +103,16 @@ class TokensViewController: UIViewController {
         footer.textLabel.textColor = viewModel.footerTextColor
         footer.frame.size = header.systemLayoutSizeFitting(UILayoutFittingExpandedSize)
 
+        footer.addGestureRecognizer(
+            UITapGestureRecognizer(target: self, action: #selector(missingToken))
+        )
+
         tableView.tableFooterView = footer
     }
+
+    @objc func missingToken() {
+        delegate?.didPressAddToken(in: self)
+    }
 }
 
 extension TokensViewController: StatefulViewController {

Trust/Tokens/ViewModels/TokensViewModel.swift

@@ -81,7 +81,7 @@ struct TokensViewModel {
     }
 
     var footerTitle: String {
-        return NSLocalizedString("tokens.footer.label.title", value: "If you have missing tokens, feel free to add them to see the balance", comment: "")
+        return NSLocalizedString("tokens.footer.label.title", value: "Missing token?", comment: "")
     }
 
     var footerTextColor: UIColor {