♻️ better progress indicator handling

Author: igorkulman

LocalizationEditor/UI/Base.lproj/Main.storyboard

@@ -135,7 +135,7 @@
                                     <autoresizingMask key="autoresizingMask"/>
                                 </tableHeaderView>
                             </scrollView>
-                            <progressIndicator hidden="YES" wantsLayer="YES" horizontalHuggingPriority="750" verticalHuggingPriority="750" maxValue="100" bezeled="NO" indeterminate="YES" controlSize="small" style="spinning" translatesAutoresizingMaskIntoConstraints="NO" id="orS-Om-jEF">
+                            <progressIndicator wantsLayer="YES" horizontalHuggingPriority="750" verticalHuggingPriority="750" maxValue="100" displayedWhenStopped="NO" bezeled="NO" indeterminate="YES" controlSize="small" style="spinning" translatesAutoresizingMaskIntoConstraints="NO" id="orS-Om-jEF">
                                 <rect key="frame" x="321" y="200" width="16" height="16"/>
                             </progressIndicator>
                         </subviews>

LocalizationEditor/UI/ViewController.swift

@@ -85,7 +85,6 @@ class ViewController: NSViewController {
         openPanel.begin { [unowned self] (result) -> Void in
             if result.rawValue == NSApplication.ModalResponse.OK.rawValue {
                 if let url = openPanel.url {
-                    self.progressIndicator.isHidden = false
                     self.progressIndicator.startAnimation(self)
                     self.dataSource.load(folder: url) { [unowned self] languages in
                         self.reloadData(with: languages)