[Localization] Arabic translation

[Simon Schampijer]

Hi,

in the arabic translation I found items that look wrong the translations 
should include the '%d' days, weeks, months (أسبوع%.0s) [1]. And 
actually, why do we have several forms here, are there languages that 
have more than one singular and plural form? And which one is picked by 
gettext if?

Regards,
Simon

[1] 
http://translate.sugarlabs.org/ar/glucose/sugar-toolkit.po?item=29&view_mode=translate