feat(General Ledger): implement title summing

This commit implements basic summing on the general ledger's title
accounts.  The summing is performed on the server in JavaScript, but
could be done on the client just as easily.

client/src/modules/accounts/AccountGrid.js

@@ -2,8 +2,8 @@ angular.module('bhima.services')
   .service('AccountGridService', AccountGridService);
 
 AccountGridService.$inject = [
-  'AccountStoreService', 'AccountService', 'Store',
-  'LanguageService', '$httpParamSerializer',
+  'AccountStoreService', 'AccountService', 'Store', 'LanguageService',
+  '$httpParamSerializer',
 ];
 
 /**
@@ -15,7 +15,6 @@ AccountGridService.$inject = [
  * adding and removing data.
  */
 function AccountGridService(AccountStore, Accounts, Store, Languages, $httpParamSerializer) {
-
   /**
    * @constructor
    *