fix copy button

Author: krokicki

templates/collection.html

@@ -51,7 +51,7 @@ <h1>Searching for images in collection: {{ collection_settings.label }}</h1>
             <div class="overlay">
 
                 <div class="buttons">
-                    <a href="#" onclick="copyTextToClipboard(this, '{{ get_data_url(dbimage) }}')" class="icon" >
+                    <a href="#" onclick="copyTextToClipboard(this, '{{ get_data_url(dbimage) }}'); return false;" class="icon" >
                         <div class="tooltip">
                             <img src="{{ url_for('static', path='copy-link-64.png') }}" alt="Copy link icon">
                             <span class="tooltiptext">Copy image data URL</span>