Empty tag search will look for not tagged links

Fixes #784

From now, searching for tags with an empty value will return only not tagged links,
with the search bar showing `x results [not tagged]`.

Note that using the api, the searchtags request parameter must be set to `false` to get the same result.

  - [ ] Update API doc

1 files changed, 5 insertions, 1 deletions

diff --git a/tpl/vintage/linklist.html b/tpl/vintage/linklist.html
index fc116667..8458caa1 100644
--- a/tpl/vintage/linklist.html
+++ b/tpl/vintage/linklist.html
@@ -55,7 +55,7 @@
 
     {if="count($links)==0"}
         <div id="searchcriteria">Nothing found.</div>
-    {elseif="!empty($search_term) or !empty($search_tags)"}
+    {elseif="!empty($search_term) or $search_tags !== ''"}
         <div id="searchcriteria">
             {$result_count} results
             {if="!empty($search_term)"}
@@ -69,6 +69,10 @@
                         <a href="?removetag={function="urlencode($value)"}">{$value} <span class="remove">x</span></a>
                     </span>
                 {/loop}
+            {elseif="$search_tags === false"}
+                <span class="linktag" title="Remove tag">
+                    <a href="?">untagged <span class="remove">x</span></a>
+                </span>
             {/if}
         </div>
     {/if}