Merge pull request #963 from akhileshdarjee/master

[fix] removed validation of conversion rate equals 1 from all transaction
[fix] [minor] update serial no in sle while creating auto serial no
Merge branch 'master' of github.com:webnotes/erpnext
[fix] [minor] fixes in testcases
Merge branch 'master' of github.com:webnotes/erpnext