[FIX] translate: possibility to disable translation of view nodes

Node content of inherited views using <attribute> tags are added
in the translation terms when syncing the terms.

The fact that the content should be translated or not depends
on the content, or to which attribute it refers.
For instance, string attributes should be translated, but
domains probably not.
But, even for domains, this is possible that it requires a translation
e.g. [('category_id.name', 'ilike', 'Customers')].
This domain is very unlikely to be integrated in the standard source code,
but this is possible to have such a domain in a view customization.

Therefore, we provide the possibility to disable the translation
case by case. Setting translation="off" in the attribute of the node
will prevent to add the node content in the translated terms.

opw-625762

openerp/tools/translate.py

@@ -578,6 +578,7 @@ def trans_parse_view(element, callback):
     for el in element.iter():
         if (not isinstance(el, SKIPPED_ELEMENT_TYPES)
                 and el.tag.lower() not in SKIPPED_ELEMENTS
+                and el.get("translation", '').strip() != "off"
                 and el.text):
             _push(callback, el.text, el.sourceline)
         if el.tail: