Browsing Basque translation

Translators: When presenting the content of a line on a web page, Orca by
default presents the full line, including any links or form fields on that
line, in order to reflect the on-screen layout as seen by sighted users.
Not all users like this presentation, however, and prefer to have objects
treated as if they were on individual lines, such as is done by Windows
screen readers, so that unrelated objects (e.g. links in a navbar) are not
all jumbled together. As a result, this is now configurable. If layout mode
is enabled, Orca will present the full line as it appears on the screen; if
it is disabled, Orca will treat each object as if it were on a separate line,
both for presentation and navigation. This string is associated with the Orca
command to manually toggle layout mode on/off.