[minor] added simplified and traditional chinese in languages list
[minor] make slow branch migratable to master
Merge pull request #1157 from pdvyas/slow-migration-patch-fix

[minor] make slow branch migratable to master
Merge pull request #1154 from anandpdoshi/hotfix

[minor] added simplified and traditional chinese in languages list
[fix] [minor] customer name visibility fixed in sales invoice
Merge pull request #1167 from akhileshdarjee/master

[fix] [minor] customer name visibility fixed in sales invoice
bumped to version 3.1.2
Merge develop for release