fixed tags not working

fgs/page.py

@@ -50,7 +50,8 @@ class Page:
         # tags
         self.tags = []
         if 'tags' in metadata:
-            for t in metadata['tags']:
+            tags = self.tags_str_to_list(metadata['tags'])
+            for t in tags:
                 if (t != category):
                     self.tags.append(t)
         self.tags.append(self.category) # the category is also a default tag
@@ -64,6 +65,19 @@ class Page:
         # url
         self.url = self.lang + '/' + self.category + '/' + self.slug + ".html"
 
+    def tags_str_to_list(self, s):
+        res = []
+        l = s.split(',')
+        for t in l:
+            t = t.lower()
+            t = t.lstrip()
+            t = t.rstrip()
+            if len(t) > 0:
+                res.append(t)
+        return res
+
+
+
     def __lt__(self, other):
         return self.date_modified < other.date_modified