Make title_id less buggy

When the title have ponctuation or finish by space it's cause bug when
you share the link ! We keep characteres alphanumeric  and replace space
by '-' character for index the article

views/blog.py

@@ -7,6 +7,7 @@ import sqlite3
 from markdown import markdown
 from tools.filesutils import getFileSizeKo
 import string
+import re
 from shutil import copy
 from tools.utils import login_required
 
@@ -35,7 +36,9 @@ def new_article():
     user = '%s' % escape(session['username'])
     
     if request.method == 'POST':
-        title_id = escape(request.form['title'].rstrip())
+        tmp = re.sub(r'[^a-zA-Z0-9 ]', '', request.form['title'].rstrip())
+        title_id = tmp.replace(' ', '-')
+        print("---------title_id : " + title_id)
         title = request.form['title'].rstrip()
         subtitle = request.form['subtitle']
         category = request.form['category']