Base_extractReferredObjectDictFromHtml except that base url to have a
leading /, because we ignore the first character of the normalized URL
returned by Base_normalizeUrlPathname.

By using / as base URL when we are in the context of the website, the
paths passed to Base_normalizeUrlPathname always start by / so we can
safely drop / from the normalized path returned by
Base_normalizeUrlPathname

because relative URL calculations in referenced pages extractions is
different when the page is in the context of a web site, we also have to
test this case

- compare references not uids
- set self.maxDiff=None to see full diff

This should have no impact on existing code as pylint is ran on a named
temporary file anyway but it avoids useless checks for relative imports
and thus is slightly faster.

See merge request nexedi/erp5!1144

adjust tests now that the test component itself is found by catalog.

* Import Movement Document:
  + Event
    + MailMessage
  + Project
  + ImmobilisationMovement
* Imported by IMovement:
  + IAccountingMovement
  + IAmountGenerator
    + AmountGeneratorMixin
    + AmountGeneratorLine
  + IAssetMovement
  + IProductionMovement
* Used by MovementGeneratorMixin:
  + IMovementGenerator
  + IMovementList

Also, define providesI<INTERFACE_NAME>() on Base class for migrated Interfaces as
these needs to be available before bt5 containing the ZODB Component Interfaces are
upgraded (see also c86107bf). Otherwise, testUpgradeInstanceWithOldDataFs fails as
z_catalog_item_list (newActiveProcess() from upgrader) calls providesIMovement().

This also moves ImmobilisationItem and its interface from erp5_immobilisation
to erp5_core as ImmobilisationDelivery import them.

* Discount: Portal Type actually uses Resource Document.

We were only checking if the defaut charset or default collation were
same, but if anything is different in the table options, we should
update it.

Also add a missing test for updating column comment

Not a proper tool to search source code, but makes it possible to search
for source code in component.

test_apply_model_filled_computer_batch_mode did not pass batch_mode
and was wrongly checking that result is True

Test was passing, because without batch_mode Computer_applyComputerModel
returns Base_redirect, so the result is indeed evaluated as True.
Yet in this case we should expect False, since no changes are applied

this is required for stock browser to work in ERP5JS with Component
portal type

and make it possible to create the test delivery using a component as
resource

this is required for stock browser to work in ERP5JS with Component
portal type

and make it possible to create the test delivery using a component as
resource

otherwise it is acquired from BudgetLine, which is bad because:
- the value of catalog.has_cell_content will be wrong
- hasCellContent is slow and this was called for all cells in a budget line

 * support budget cell's getInventoryQueryDict
 * raise NotImplementedError for budget cell variation. We can't
   implement this unless we generate dynamically a date time field on
   budget line's view.

Still TODO:
 * Test
 * group_by slot_index should not be needed
 * think more about a generic "domain budget variation" ?