Remove Explorer.isRefreshing (#539)

src/Main.tsx

@@ -211,10 +211,7 @@ const App: React.FunctionComponent = () => {
             {/* Splitter - End */}
           </div>
           {/* Collections Tree - End */}
-          <div
-            className="connectExplorerContainer"
-            data-bind="visible: !isRefreshingExplorer() && tabsManager.openedTabs().length === 0"
-          >
+          <div className="connectExplorerContainer" data-bind="tabsManager.openedTabs().length === 0">
             <form className="connectExplorerFormContainer">
               <SplashScreen explorer={explorer} />
             </form>