[trunk] csv import broken

[Yannick Vaucher @ Camptocamp]

Tested on runbot
http://trunk-30975-all.runbot.openerp.com

How to reproduce:

Open customers list. Export few ones with import compatibility.

Then do import. After selecting the file, nothing appens, Validate and Import are grey.

Locally I have the following error.

2014-03-15 21:07:06,151 9310 ERROR openerp_trunk_myvr werkzeug: Error on request:
Traceback (most recent call last):
      File ".../eggs/Werkzeug-0.8.3-py2.7.egg/werkzeug/serving.py", line 159, in run_wsgi
          execute(app)
        File ".../eggs/Werkzeug-0.8.3-py2.7.egg/werkzeug/serving.py", line 146, in execute
          application_iter = app(environ, start_response)
        File ".../server/openerp/service/wsgi_server.py", line 362, in application
          return application_unproxied(environ, start_response)
        File ".../server/openerp/service/wsgi_server.py", line 348, in application_unproxied
          result = handler(environ, start_response)
        File ".../server/openerp/http.py", line 1016, in __call__
          return self.dispatch(environ, start_response)
        File ".../server/openerp/http.py", line 995, in __call__
          return self.app(environ, start_wrapped)
        File ".../eggs/Werkzeug-0.8.3-py2.7.egg/werkzeug/wsgi.py", line 411, in __call__
          return self.app(environ, start_response)
        File ".../server/openerp/http.py", line 1148, in dispatch
          result = ir_http._dispatch()
        File ".../server/openerp/addons/base/ir/ir_http.py", line 120, in _dispatch
          return self._handle_exception(e)
        File ".../server/openerp/addons/base/ir/ir_http.py", line 116, in _dispatch
          result = request.dispatch()
        File ".../server/openerp/http.py", line 458, in dispatch
          r = self._call_function(**self.params)
        File ".../server/openerp/http.py", line 223, in _call_function
          return checked_call(self.db, *args, **kwargs)
        File ".../server/openerp/service/model.py", line 113, in wrapper
          return f(dbname, *args, **kwargs)
        File ".../server/openerp/http.py", line 220, in checked_call
          return self.endpoint(*a, **kw)
        File ".../server/openerp/http.py", line 559, in __call__
          return self.method(*args, **kw)
        File ".../server/openerp/http.py", line 266, in response_wrap
          response = f(*args, **kw)
      TypeError: set_file() takes at least 4 arguments (4 given)