quicktour: Fix syntax error.

Fixes #18871.

Fix userguide localization

Change-Id: Ie52a545b4e50ef3d87c7bfb26e54772fd7816377
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5974
Reviewed-by: nephele <nep@packageloss.eu>
Reviewed-by: Niels Sascha Reedijk <niels.reedijk@gmail.com>

Adding the Quick Tour

* Add a link to the Quick Tour to the desktop.
* Remove the Welcome page from desktop. We don't want to clutter
the user's desktop more than necessary. As "Home" page of
WebPositive, it's still very visible.
* Mention the Quick Tour in the Welcome package description.
* Add a "quicktour" script similar to the welcome/userguide
that opens the online version if it's not installed locally.
* Add icons to the userguide and quicktour scripts. Fixes #14706.
* Add bookmark and launcher for the Quick Tour.

Adjust the AddFileDataAttributeRule to create its temporary file in
the "common" architecture, the file is not architecture specific.

Add a rule PrepareScriptWithIcon in src/data/bin/Jamfile to assign
an icon and make the script executable.

Change-Id: Ia7604ff4715a5aaf9a645c1b3333a954d6a4dafc
Reviewed-on: https://review.haiku-os.org/c/haiku/+/1924
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>