[trunk]Can't able to click on any module header gives traceback : AttributeError: 'module' object has no attribute 'get_module_resource'

Steps to reproduce :

Checked with latest trunk :

Go to apps or Installed Modules > click on any module header like "Social Network" > trace back will appear on just one click.

Traceback (most recent call last):
  File "/home/odoo/runbot/static/openerp-dev-trunk-30012/server/openerp/http.py", line 348, in dispatch
    response["result"] = self._call_function(**self.params)
  File "/home/odoo/runbot/static/openerp-dev-trunk-30012/server/openerp/http.py", line 220, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/home/odoo/runbot/static/openerp-dev-trunk-30012/server/openerp/service/model.py", line 113, in wrapper
    return f(dbname, *args, **kwargs)
  File "/home/odoo/runbot/static/openerp-dev-trunk-30012/server/openerp/http.py", line 215, in checked_call
    return self.func(*a, **kw)
  File "/home/odoo/runbot/static/openerp-dev-trunk-30012/server/openerp/http.py", line 532, in __call__
    return self.method(*args, **kw)
  File "/home/odoo/runbot/static/openerp-dev-trunk-30012/server/openerp/addons/web/controllers/main.py", line 1203, in call_kw
    return self._call_kw(model, method, args, kwargs)
  File "/home/odoo/runbot/static/openerp-dev-trunk-30012/server/openerp/addons/web/controllers/main.py", line 1186, in _call_kw
    records = request.session.model(model).read(*args, **kwargs)
  File "/home/odoo/runbot/static/openerp-dev-trunk-30012/server/openerp/http.py", line 619, in proxy
    result = meth(cr, request.uid, *args, **kw)
  File "/home/odoo/runbot/static/openerp-dev-trunk-30012/server/openerp/osv/orm.py", line 3240, in read
    result = self._read_flat(cr, user, select, fields, context, load)
  File "/home/odoo/runbot/static/openerp-dev-trunk-30012/server/openerp/osv/orm.py", line 3356, in _read_flat
    res2 = self._columns[f].get(cr, self, ids, f, user, context=context, values=res)
  File "/home/odoo/runbot/static/openerp-dev-trunk-30012/server/openerp/osv/fields.py", line 1210, in get
    result = self._fnct(obj, cr, uid, ids, name, self._arg, context)
  File "/home/odoo/runbot/static/openerp-dev-trunk-30012/server/openerp/addons/base/module/module.py", line 157, in _get_desc
    path = addons.get_module_resource(module.name, 'static/description/index.html')
AttributeError: 'module' object has no attribute 'get_module_resource'