fixed BUG-21: file stucture broken after rescan, and beginnings of new job for checking for duplicate files, and having the back-end job indicate to the front-end that there are duplicates, and the basic route is in the f/e, but not built yet

templates/base.html

@@ -110,9 +110,14 @@
 	{% if GetJM_Message() != None %}
 		{% set msg=GetJM_Message() %}
 		<div class="row alert alert-{{msg.alert}}">
-            <a href="{{url_for('joblog', id=msg.job_id)}}">Job #{{msg.job_id}}</a>: {{msg.message|safe}}
+            {% if msg.job_id %}
+                <a href="{{url_for('joblog', id=msg.job_id)}}">Job #{{msg.job_id}}</a>: 
+            {% endif %}
+            {{msg.message|safe}}
         </div>
-		{% set dont_print=ClearJM_Message(msg.id) %}
+        {% if msg.alert != "danger" %}
+            {% set dont_print=ClearJM_Message(msg.id) %}
+        {% endif %}
 	{% endif %}
 {% endif %}