[event] ref_type and ref_name should be read only
[delete doc] ability to delete a list of docs
[delete doc] delete a list of docs
[fields] [fix] last value bug
[profile] [fix] check that there should remain atleast one system manager when disabling/deleting a profile
[general ledger] group by voucher option
[fixes] pull previous doc details
[grid report] round currency values
Merge branch 'master' of git://github.com/webnotes/wnframework