[fix] [exchange-rate] let user defined exchange rate take preceedence
[fix] [exchange-rate] let user defined exchange rate take preceedence

anandpdoshi/erpnext,MartinEnder/erpnext-de,MartinEnder/erpnext-de,sagar30051991/ozsmart-erp,meisterkleister/erpnext,meisterkleister/erpnext,sagar30051991/ozsmart-erp,indictranstech/biggift-erpnext,njmube/erpnext,shft117/SteckerApp,gangadhar-kadam/helpdesk-erpnext,mahabuber/erpnext,anandpdoshi/erpnext,mahabuber/erpnext,anandpdoshi/erpnext,gangadharkadam/v6_erp,mbauskar/sapphire-erpnext,gangadhar-kadam/helpdesk-erpnext,ShashaQin/erpnext,mbauskar/helpdesk-erpnext,indictranstech/erpnext,ShashaQin/erpnext,indictranstech/osmosis-erpnext,geekroot/erpnext,SPKian/Testing2,sagar30051991/ozsmart-erp,indictranstech/erpnext,SPKian/Testing,aruizramon/alec_erpnext,gsnbng/erpnext,SPKian/Testing2,indictranstech/osmosis-erpnext,shft117/SteckerApp,gangadharkadam/v6_erp,indictranstech/biggift-erpnext,mbauskar/helpdesk-erpnext,geekroot/erpnext,indictranstech/trufil-erpnext,mahabuber/erpnext,SPKian/Testing,sagar30051991/ozsmart-erp,mahabuber/erpnext,gsnbng/erpnext,shft117/SteckerApp,gangadhar-kadam/helpdesk-erpnext,njmube/erpnext,shft117/SteckerApp,gsnbng/erpnext,geekroot/erpnext,mbauskar/sapphire-erpnext,indictranstech/erpnext,ShashaQin/erpnext,gsnbng/erpnext,susuchina/ERPNEXT,njmube/erpnext,mbauskar/sapphire-erpnext,ShashaQin/erpnext,aruizramon/alec_erpnext,indictranstech/trufil-erpnext,mbauskar/helpdesk-erpnext,hatwar/buyback-erpnext,meisterkleister/erpnext,geekroot/erpnext,indictranstech/erpnext,indictranstech/trufil-erpnext,meisterkleister/erpnext,mbauskar/helpdesk-erpnext,SPKian/Testing,SPKian/Testing,SPKian/Testing2,MartinEnder/erpnext-de,Aptitudetech/ERPNext,indictranstech/trufil-erpnext,SPKian/Testing2,gangadharkadam/v6_erp,indictranstech/osmosis-erpnext,gangadhar-kadam/helpdesk-erpnext,hatwar/buyback-erpnext,aruizramon/alec_erpnext,hatwar/buyback-erpnext,hatwar/buyback-erpnext,susuchina/ERPNEXT,gangadharkadam/v6_erp,njmube/erpnext,aruizramon/alec_erpnext,indictranstech/osmosis-erpnext,MartinEnder/erpnext-de,susuchina/ERPNEXT,anandpdoshi/erpnext,mbauskar/sapphire-erpnext,indictranstech/biggift-erpnext,indictranstech/biggift-erpnext,susuchina/ERPNEXT