Upon instantiation of a LinkTools object, the forceNewWindow property is
now added to the options object. This allows us to take advantage of the
pre-exisiting mechanism to conditionally display the "open new window"
checkbox in the LinkTools widget
(odoo/addons/web_editor/static/src/xml/wysiwyg.xml:334).
The possibily of not having the checkbox in the DOM demanded a
modification of LinkTools._isNewWindow().
_isFromAnotherHostName(), being used by both LinkDialog and LinkTools,
was moved to their parent class Link.
task# 2789222
closesodoo/odoo#104923
Signed-off-by: David Monjoie (dmo) <dmo@odoo.com>