Release v6.4.5

• [fix] Fetch UOM Conversion Factor from template if not specified in variants
• minor fixes
• [Fixes] minor fix for fiscal year in holiday list
• [fix] Valuation Rate in Stock Balance report
• Calendar view for holiday listing
• minor fix in credit limit
• [fix][report] Left join used in pending reports
• [fix] allowed more than 2 currencies in Journal Entry
• [fix] Return account currency only if account provided
• [fix] Create sample opportunity and quotation only if Customer exists
• [fix] default contact for website
• [fix] sales & purchase order status