Adding all new code, removed a lot obsolete code and fixed import paths etc.

Mac OS X launcher:
* UI built on Swift
  * Why?
    * Apple seems to on purpose make it harder to get into Objective-C these days
    * Swift is compiled to native code, but has easiness of Javascript in programming
    * Perfect for the OS X UI, many guides & tutorials as well
* "Backend" in Objective-C++ / C++14
  * Why?
    * Originally written in Objective-C / C++14 with C++17 backports
    * Only for backend because of the time the development takes
    *

Short summary of features:

* Java
  * It can detect java from:
    * JAVA_HOME environment variable
    * "Internet Plug-Ins" Apple stuff
    * By the /usr/libexec/java_home binary helper
  * It can unpack a new version of I2P
    * Unpacks to ~/Library/I2P
    * Can check currently unpacked version in ~/Library/I2P via i2p.jar's "net.i2p.CoreVersion"

  * User Interface (a popover, see https://youtu.be/k8L3lQ5rUq0 for example of this concept)
    * Router control tab view
      * It can start the router
      * It can stop the router
      * It can detect already running router, then avoid fireing up one
      * It can show basic information about the router state & version
    * Log view tab (not yet done)
  * While left-click triggers popover, right-click draws a minimal context menu

launchers/macosx/I2PLauncher/userinterface/PopoverViewController.swift

@@ -0,0 +1,118 @@
+//
+//  PopoverViewController.swift
+//  I2PLauncher
+//
+//  Created by Mikal Villa on 18/09/2018.
+//  Copyright © 2018 The I2P Project. All rights reserved.
+//
+
+import Cocoa
+
+class PopoverViewController: NSViewController {
+  
+  required init?(coder: NSCoder) {
+    super.init(coder: coder)
+    //super.init(nibName: "UserInterfaces", bundle: Bundle.main)!
+    //let nib = NSNib(nibNamed: "UserInterfaces", bundle: Bundle.main)
+    
+  }
+  
+  
+  override func viewDidLoad() {
+    super.viewDidLoad()
+    // Do view setup here.
+  }
+  
+  
+  
+}
+
+@objc class RouterStatusView : NSView {
+  static var instance: RouterStatusView?
+  
+  static func getInstance() -> RouterStatusView? {
+    if (self.instance != Optional.none) {
+      return RouterStatusView.instance
+    }
+    return Optional.none
+  }
+  
+  @IBOutlet var routerStatusLabel: NSTextField?
+  @IBOutlet var routerVersionLabel: NSTextField?
+  @IBOutlet var routerStartedByLabel: NSTextField?
+  @IBOutlet var routerUptimeLabel: NSTextField?
+  
+  @IBOutlet var quickControlView: NSView?
+  @IBOutlet var routerStartStopButton: NSButton?
+  
+  
+  @objc func actionBtnStartRouter(_ sender: Any?) {
+    NSLog("START ROUTER")
+    (sender as! NSButton).cell?.stringValue = "Stop Router"
+    let timeWhenStarted = Date()
+    RouterProcessStatus.routerStartedAt = timeWhenStarted
+    SwiftMainDelegate.objCBridge.startupI2PRouter(RouterProcessStatus.i2pDirectoryPath, javaBinPath: RouterProcessStatus.knownJavaBinPath!)
+  }
+  @objc func actionBtnStopRouter(_ sender: Any?) {
+    NSLog("STOP ROUTER")
+  }
+  @objc func actionBtnRestartRouter(sender: Any?) {}
+  
+  override func viewWillDraw() {
+    super.viewWillDraw()
+    if (RouterStatusView.instance == Optional.none) {
+      RouterStatusView.instance = self
+    }
+    self.setRouterStatusLabelText()
+  }
+  
+  func setRouterStatusLabelText() {
+    if (RouterProcessStatus.isRouterRunning) {
+      routerStatusLabel?.cell?.stringValue = "Router status: Running"
+      routerStartStopButton?.action = #selector(self.actionBtnStopRouter(_:))
+    } else {
+      routerStatusLabel?.cell?.stringValue = "Router status: Not running"
+      routerStartStopButton?.action = #selector(self.actionBtnStartRouter(_:))
+    }
+    routerStartStopButton?.needsDisplay = true
+    routerStartStopButton?.target = self
+    quickControlView?.needsDisplay = true
+    
+    if (RouterProcessStatus.routerVersion?.isEmpty)! {
+      routerVersionLabel?.cell?.stringValue = "Router version: Still unknown"
+    } else {
+      routerVersionLabel?.cell?.stringValue = "Router version: " + RouterProcessStatus.routerVersion!
+    }
+    if (RouterProcessStatus.routerStartedAt != Optional.none) {
+      routerUptimeLabel?.cell?.stringValue = "Router has runned for " + DateTimeUtils.timeAgoSinceDate(date: NSDate(date: RouterProcessStatus.routerStartedAt!), numericDates: false)
+    }
+  }
+  
+  init() {
+    let c = NSCoder()
+    super.init(coder: c)!
+    self.setRouterStatusLabelText()
+  }
+  
+  required init?(coder decoder: NSCoder) {
+    super.init(coder: decoder)
+    self.setRouterStatusLabelText()
+  }
+  
+}
+
+
+extension PopoverViewController {
+  static func freshController() -> PopoverViewController {
+    let storyboard = NSStoryboard(name: "Storyboard", bundle: Bundle.main)
+    //2.
+    let identifier = NSStoryboard.SceneIdentifier(string: "PopoverView")
+    //3.
+    guard let viewcontroller = storyboard.instantiateController(withIdentifier: identifier as String) as? PopoverViewController else {
+      fatalError("Why cant i find PopoverViewController? - Check PopoverViewController.storyboard")
+    }
+    //let viewcontroller = PopoverViewController()
+    return viewcontroller
+  }
+}
+