[FIX] optimization necessary in some cases when kanban views can take more that 10 seconds to load
Launchpad automatic translations update.
[FIX] force module paths to be bytestrings

Backport trunk Revision:
3729 revid:chm@openerp.com-20130502122806-1i9h8v0cvhb6p63q


The http controllers handler crashes when there are non-ascii chars in the url path.

`openerp.modules.module.ad_paths` containing unicode strings, werkzeug fail to compare the path `module` which is converted to ascii.
force `module` to be bytestrings