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.

using command:

    msgattrib bt5/erp5_l10n_fr/MessageTranslationTemplateItem/fr/erp5_ui/translation.po --no-fuzzy --translated -s --no-wrap -o  bt5/erp5_l10n_fr/MessageTranslationTemplateItem/fr/erp5_ui/translation.po

See merge request !1251

1. set 0 as default value, otherwise leaflet_display_side will always be true
2. show message instead of crash
3. correct parameters
4. clean code

(and translate this to french as well)

Since 206a8e25 (erp5_officejs: new OfficeJS Slideshow Editor application,
2020-07-06) this test runs with erp5_run_my_doc installed, and the first export
action for Web Page is no longer "Export as SlideShow" but "Export as Chapter".
This is an action which is here since a long time in erp5_run_my_doc, but since
erp5_run_my_doc was not installed in this test it was not impacting this test.

Adjust the tests so that they don't assume that the first export action is
"Export as SlideShow" but are more independent on which is the first action.

Also, all actions have a new index, so places where we select the action by
index no longer work. Instead of updating the indexes, select by label which
should be more future proof.