Standardize rel

content.py

@@ -358,7 +358,7 @@ def addWebLinks(content: str) -> str:
         if w.endswith('.') or w.endswith(';'):
             w = w[:-1]
         markup = '<a href="' + w + \
-            '" rel="nofollow noopener" target="_blank">'
+            '" rel="nofollow noopener noreferrer" target="_blank">'
         for prefix in prefixes:
             if w.startswith(prefix):
                 markup += '<span class="invisible">' + prefix + '</span>'

webapp_column_left.py

@@ -216,7 +216,8 @@ def getLeftColumnContent(baseDir: str, nickname: str, domainFull: str,
                     # add link to the returned html
                     htmlStr += \
                         '      <p><a href="' + linkStr + \
-                        '" target="_blank" rel="noopener noreferrer">' + \
+                        '" target="_blank" ' + \
+                        'rel="nofollow noopener noreferrer">' + \
                         lineStr + '</a></p>\n'
                     linksFileContainsEntries = True
             else:

webapp_column_right.py

@@ -243,7 +243,7 @@ def htmlNewswire(baseDir: str, newswire: {}, nickname: str, moderator: bool,
             title = removeLongWords(item[0], 16, []).replace('\n', '<br>')
             htmlStr += '<p class="newswireItemVotedOn">' + \
                 '<a href="' + item[1] + '" target="_blank" ' + \
-                'rel="noopener noreferrer">' + \
+                'rel="nofollow noopener noreferrer">' + \
                 '<span class="newswireItemVotedOn">' + title + \
                 '</span></a>' + totalVotesStr
             if moderator:
@@ -271,7 +271,7 @@ def htmlNewswire(baseDir: str, newswire: {}, nickname: str, moderator: bool,
             if moderator and moderatedItem:
                 htmlStr += '<p class="newswireItemModerated">' + \
                     '<a href="' + item[1] + '" target="_blank" ' + \
-                    'rel="noopener noreferrer">' + \
+                    'rel="nofollow noopener noreferrer">' + \
                     title + '</a>' + totalVotesStr
                 htmlStr += ' ' + dateShown
                 htmlStr += '<a href="/users/' + nickname + \
@@ -283,7 +283,7 @@ def htmlNewswire(baseDir: str, newswire: {}, nickname: str, moderator: bool,
             else:
                 htmlStr += '<p class="newswireItem">' + \
                     '<a href="' + item[1] + '" target="_blank" ' + \
-                    'rel="noopener noreferrer">' + \
+                    'rel="nofollow noopener noreferrer">' + \
                     title + '</a>' + \
                     totalVotesStr
                 htmlStr += ' <span class="newswireDate">'