Fix spellcheck

* also fix spaces width

public/js/history.js

@@ -3,7 +3,6 @@ var store = require('store');
 var common = require('./common');
 var checkIfAuth = common.checkIfAuth;
 var urlpath = common.urlpath;
-var serverurl = common.serverurl;
 var getLoginState = common.getLoginState;
 
 var extra = require('./extra');