Update UI for new path maintenance approach

Signal/src/Loki/Utilities/IP2Country.swift

@@ -51,11 +51,11 @@ final class IP2Country {
     }
 
     func populateCacheIfNeeded() -> Bool {
-        if OnionRequestAPI.paths.count < OnionRequestAPI.pathCount {
+        if OnionRequestAPI.paths.isEmpty {
             OnionRequestAPI.paths = Storage.getOnionRequestPaths()
         }
         let paths = OnionRequestAPI.paths
-        guard paths.count >= OnionRequestAPI.pathCount else { return false }
+        guard !paths.isEmpty else { return false }
         let pathToDisplay = paths.first!
         pathToDisplay.forEach { snode in
             let _ = self.cacheCountry(for: snode.ip) // Preload if needed

Signal/src/Loki/View Controllers/PathVC.swift

@@ -105,7 +105,7 @@ final class PathVC : BaseVC {
 
     private func update() {
         pathStackView.arrangedSubviews.forEach { $0.removeFromSuperview() }
-        if OnionRequestAPI.paths.count >= OnionRequestAPI.pathCount {
+        if !OnionRequestAPI.paths.isEmpty {
             let pathToDisplay = OnionRequestAPI.paths.first!
             let dotAnimationRepeatInterval = Double(pathToDisplay.count) + 2
             let snodeRows: [UIStackView] = pathToDisplay.enumerated().map { index, snode in