Easy spacing fixes, trailing stuff

Remove useless trailing \
Remove trailing spaces
Add missing empty lines

autopep8 -ir -j2 --select=E301,E302,E502,W291,W293,W391 .

Diff quickly checked.

modules/inrocks/tools.py

@@ -20,6 +20,7 @@
 
 import re
 
+
 def id2url(_id):
     "return an url from an id"
     regexp2 = re.compile("(\w+).([0-9]+).(.*$)")