cope with bad wallet name

core/views/uploads.py

@@ -677,11 +677,14 @@ def scanupload(request, path=None):
                  
         survexsize =  str(min(len(str(waldata["survex file"])), 46))
         
+        try:
             thiswallet = Wallet.objects.get(walletname=wallet)
             caveifywallet(thiswallet)
             thiswallet.ticks = thiswallet.get_ticks() # the complaints in colour form
             #fixsurvextick(thiswallet, thiswallet.ticks)
             print(thiswallet)
+        except:
+            thiswallet = None
         context = {'year': year, 'prev': prev, 'next': next, 'prevy': prevy, 'nexty': nexty,
                 'files': files, 'dirs': dirs, 'waldata': waldata, 'svxfiles': svxfiles,
                 'checked': checked,

templates/wallet_table.html

@@ -49,7 +49,7 @@
     <td style="padding:1px; background-color:{{wallet.ticks.T}}" title="Tunnel or Therion done">&nbsp;</td>
     <td style="padding:1px; background-color:{{wallet.ticks.W}}" title="Website updated">&nbsp;</td>
   </tr>
-{% empty %} <h2>No Wallets for this year</h2>
+{% empty %} <h2>No Wallet found</h2>
 <b>Before 1998</b> we used a survey book system, not wallets. But 1983 has some scraps recreated as wallets.
 <p>That is probably why you cannot see anything here. Look at the complete list of scanned files instead, 
 at <a href="/survey_scans/">Scans</a> (it is slow, so be patient).