Base Language Flexible
Goal: Technical
Seed Contributor: Kenos
Sponsor: Trek Global
Description:
Please refer <http://sourceforge.net/p/adempiere/discussion/611158/thread/506d18af>
A new process was added "Change Base Language", use this process to swap en_US to another base language of your preference, or if you want a system without base language just set the base language to a non-login language.
PO.updateTranslations and Synchronize Doc Translation were changed to synchronize any change on the master table (i.e. C_Charge) to the corresponding translation table (i.e. C_Charge_Trl) for the language selected by tenant.

Technical Info: IDEMPIERE-136 IDEMPIERE-489
Source: Wiki