Upgrade SQL Files - What Is PHP:add_new_tab?

[web.geek]

I started using PrestaShop with 1.4.0.4, and I've upgraded every 2 or 3 releases as I tested. But I perform upgrades manually by comparing differences in the base code with my current code. I do the same for the database by scripting out the base installed database and my current database and compare them with WinMerge. I also check the /install/sql/upgrade folders and incorporate the scripts from those files.

The /install/sql/upgrade/1.4.0.14.sql file has some code in it that I hadn't seen before.

/* PHP:add_new_tab(AdminInformation, en:Configuration Information|fr:Informations|es:Informations|it:Informazioni di configurazione|de:Konfigurationsinformationen,  9); */;
/* PHP:add_new_tab(AdminPerformance, de:Leistung|en:Performance|it:Performance|fr:Performances|es:Rendimiento,  8); */;
/* PHP:add_new_tab(AdminCustomerThreads, en:Customer Service|de:Kundenservice|fr:SAV|es:Servicio al cliente|it:Servizio clienti,  29); */;
/* PHP:add_new_tab(AdminWebservice, fr:Service web|es:Web service|en:Webservice|de:Webservice|it:Webservice,  8); */;
/* PHP:add_new_tab(AdminAddonsCatalog, fr:Catalogue de modules et thèmes|de:Module und Themenkatalog|en:Modules & Themes Catalog|it:Moduli & Temi catalogo,  7); */;
/* PHP:add_new_tab(AdminAddonsMyAccount, it:Il mio Account|de:Mein Konto|fr:Mon compte|en:My Account,  7); */;
/* PHP:add_new_tab(AdminThemes, es:Temas|it:Temi|de:Themen|en:Themes|fr:Thèmes,  7); */;
/* PHP:add_new_tab(AdminGeolocation, es:Geolocalización|it:Geolocalizzazione|en:Geolocation|de:Geotargeting|fr:Géolocalisation,  8); */;
/* PHP:add_new_tab(AdminTaxRulesGroup, it:Regimi fiscali|es:Reglas de Impuestos|fr:Règles de taxes|de:Steuerregeln|en:Tax Rules,  4); */;
/* PHP:add_new_tab(AdminLogs, en:Log|fr:Log|es:Log|de:Log|it:Log,  9); */;

I'm a DBA by trade, so when I see comment characters (/* */), I know the database engine will ignore them. My question is: do these statements do something when run through the PrestaShop install/upgrade process? More importantly, will I be missing something in my final version if I ignore these statements?

[kwizo]

Those tabs are absent after upgrading to 1.4 on my site.

Is there any quick way to get excluded tabs to be displayed (or reinstall again)?

[dark_effie]

In presta v.1.3, you can easily add new tab under Tools->tabs pane but now in presta v.1.4, where can we find it so that we can add new BO tab?