fix space

src/client/js/services/PageHistoryContainer.js

@@ -16,9 +16,7 @@ export default class PageHistoryContainer extends Container {
     super();
 
     this.appContainer = appContainer;
-
     this.pageContainer = pageContainer;
-
     this.dummyRevisions = 0;
 
     this.state = {
@@ -39,7 +37,6 @@ export default class PageHistoryContainer extends Container {
     this.fetchPageRevisionBody = this.fetchPageRevisionBody.bind(this);
   }
 
-
   /**
    * Workaround for the mangling in production build to break constructor.name
    */