IT gh#195 - webui

##195 Restrict when allowing to create a new included document

Testcase to make sure the included documents can only be created in certain conditions

1. Create a new purchase order, do not set a partner

2. Go to PO Line, press “Add new”
   • => OK: line was not created
   • => OK: Got an error message like “Document XYZ* state is invalid: Cannot create included document because it’s not allowed.”
3. Go to PO line, press batch entry
   • => OK: the fields for batch entry(product and qty) are not displayed
   • => OK: Got an error message like “Document XYZ* state is invalid: Cannot create included document because it’s not allowed.”
4. Go to order tax, repeat 2 and 3
   • => OK: Same results

5. Go to the Business partner, set G000X ( the order is saevd now)

6. Go to orderline, Press Add New , do not set anything, press Done
   • => new empty line created (not saved because it lacks mandatory fields)
7. Press Add new again
   • => OK: line was not created
   • => OK: Got an error message like “Document XYZ* state is invalid: Cannot create included document because it’s not allowed.”
8. Press Batch entry
   • => OK: the fields for batch entry(product and qty) are not displayed
   • => OK: Got an error message like “Document XYZ* state is invalid: Cannot create included document because it’s not allowed.” “XYZ*” : document identifier window/documentNo
9. If you complete the line with a product and qty, you are able to use Add New and Batch Entry and lines are created without error.