fix ballot.sol load

src/app.js

@@ -514,14 +514,10 @@ Please make a backup of your contracts and start using http://remix.ethereum.org
 
   filePanel.event.register('resize', delta => self._adjustLayout('left', delta))
 
-  setTimeout(function initOpenFile () {
+  var previouslyOpenedFile = config.get('currentFile')
-    var previouslyOpenedFile = config.get('currentFile') || 'browser/ballot.sol'
-    config.set('currentFile', null)
   filesProviders['browser'].get(previouslyOpenedFile, (error, content) => {
     if (!error && content) fileManager.switchFile(previouslyOpenedFile)
-      else fileManager.switchFile('browser/ballot.sol')
   })
-  }, 0)
 
   // ----------------- Renderer -----------------
   var rendererAPI = {

src/app/files/fileManager.js

@@ -135,8 +135,6 @@ class FileManager {
     } else _switchFile(file)
     function _switchFile (file) {
       self.saveCurrentFile()
-      var currentFile = self.opt.config.get('currentFile')
-      if (file === currentFile) return
       self.refreshTabs(file)
       self.fileProviderOf(file).get(file, (error, content) => {
         if (error) {