Remove get_server_field from leave_application

- Make get_holidays and get_total_leave_days global to module
- Replace get_server_field with using whitelisted function
get_total_leave_days
bumped to version 4.10.0
Merge branch 'develop'
Translation fixed for Croatia
Merge pull request #2386 from nabinhait/fix1

Translation fixed for Croatia
bumped to version 4.11.0
Merge branch 'develop'
Credit days validation fixes
Payment tool fix: get outstanding sales orders
Merge pull request #2393 from nabinhait/fix1

Credit days and payment tool fixes
Merge pull request #2379 from nathando/develop

Remove get_server_field from leave_application
[#2230] Add Totals row to Gross Profit report
bumped to version 4.11.1
Merge branch 'develop'
Reference / Cheque date is after due date
Merge pull request #2396 from nabinhait/fix1

Reference / Cheque date is after due date
Delete events linked with employee on deletion of Employee
Map only pending qty from Material Request to Purchase Order/Stock Entry
[#2219] Re-Order Level Validation: Warehouse cannot have two reorders for same item
POS feature #2305