Integrate Jexcel editor to Web Table app

See merge request nexedi/erp5!1207

Try to get the cropper options from previous device ID

testFunctionalRunMyDocSample was moved to erp5_run_my_doc (1d700b09) but it
was a mistake and should have been in erp5_user_tutorial where the Test Page
is defined.

- clone action added

Default printout (used for order, packing lists, invoices etc) was raising
error for deliveries with cells when the resource descrption was only \n

See merge request nexedi/erp5!1253

erp5_user_tutorial_ui_test: dependency on erp5_accounting was missing (account_module).

runUnitTest: log_directory is imported from Unit Tests and thus must be global to avoid pylint error.