[otrs] Broken item in the Navbar

[Phil Morris]

 > At some point during our life of OTRS, we seem to have gained an Item
into our navbar with no description etc. It appears between the 'Logout'
and 'Preferences' items, and is just a broken image with an ALT tag full
of junk code.
 
 > Looking at the page source, there is an unterminated string constant
in the html, resulting in a lot of perl markup being dumped into the ALT
tag.
 
 > I've traced this into the .dtl and I can see the Item block code
which is responsible, but I've trawled through our config files and I
cannot find a navbar entry that has null descriptions/names.
 
 > Has anyone else seen this, or can provide any insight on how to debug
the system to find out an entry in the config which is feeding this
item?
 
I neglected to mention, this was noticed following our upgrade to
Version 2.1.7  from 2.0.x
 
We've just noticed also that the bulk action page is blank :(
 
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