* Add configurable frequency in Selling Settings for update of project and company
* remove redundant code
* remove redundant code, only trigger calculation if order/invoice is present
* removed dangling commas as per common convention in hooks
* fix:handling multiple documents
* Update selling_settings.json
* enable selection of coa for user
Give user option to select coa that's been verified along with standard and standard with numbers. Also added a button that opens a dialog and renders the selected chart
* read chart from file and make a tree render-able dict of it
* tree method to return node data for coa setup wizard
* Fetch withheld percentage
* Set query for accounts on the basis of company
* Fix bank guarantee error on submit
* Remove errors caused by fields which are removed
* utility function added for treeview
function to distinguish defaults from user permission and return appropriate data
* make use of utility function for treeview
* Payroll Entry - Accrual entry - exclude only tax impact - and separate JE for Flexi in Bank Entry
* Journal Entry - validate cheque info on submit
* Payroll Entry - Make Bamk Entry - Separate JE for benefit component
* location tree fixes
validate if child present while deleting, filter lists down only group enabled node
* department tree fixes
Adding child fix if added from rootnode with company filter applied. Rename consistency added. Validation added in on_trash
* Company tree fix
Check if child exist while deleting a node validation added.
* Supplier Group tree fixes
on_trash validation added if child node present
* Cost Center tree fixes
Adding child to root node throws error because parent_cost_center picks up root name
* Fix Purchase Receipt tests
* Fix Item test
* Fix daily work summary test
* Modify currency exchange test cases
* Fix Leave Application test
* Update working hours when making salary slip from timesheet
* Replace fixer.io with exchangeratesapi
* Fix codacy
* add doctypes allowed to group items, average the rate
* add check field to group items during print
* call common before_print in delivery note
* fix precision issue while calculating average
* fix iteritems() takes exactly 1 argument (2 given)
* adds new helper functions
* use new functions to make POS invoices filterable on warehouse and cost center
* more PEP8 fixes
