[trean] Patch for case when No categories are set

[Michal]

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Sorry about bad attachments, here are the good ones.

Michal

Quoting Michal <michal@michal.no-ip.com>:

> Hi all,
> 
> 
> I found that new users with no trean categories set, can see link 'New
> Bookmark', because /templates/browse/bookmarks.inc is displayed.
> 
> Also 'Add' menu icon was still displayed so here is patch for browse.php and

> /templates/menu/menu.inc which solve both things.
> 
> 
> Michal
> 
> 



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