[report] employee birthday
[report] employee information
[fixes] company for auto-material request
[fixes][currency symbol] fieldtype in report
[fixes] floating point issue in buying rate
[fixes] item_code non-mandatory in item if naming_series
[fixes][jv] set clearance date as null on saving document
Merge branch 'master' of https://github.com/webnotes/erpnext
email in event system and validation to avoid conflict completed