Made backend sync script update the pos file periorically.

Change-Id: I5b4028c8d69a6bf78b372f0d1cdb258207465f30
Localisation updates from http://translatewiki.net.

Change-Id: I285aebdacc930b2eeb97f56987c958ae3f4811cd
Merge "Made backend sync script update the pos file periorically."
Merge "Localisation updates from http://translatewiki.net."