fileChooser dialogs doesn't work

[Fernando Fernandez]

In Arch Linux the fileChooser dialogs doesn't work at all. The patch fixes it

Python: 2.7.7
Pygtk: 2.24.0
Gtk2: 2.24.24
Gtk3: 3.12.2

gamecaster -d output:

Indicator - DEBUG - Indicator initialized
Main - DEBUG - Audio switch status read from settings file
Main - DEBUG - Auto recording status read from settings file
Main - DEBUG - Video bitrate read from settings file
Main - DEBUG - Threadcount read from settings file
Main - DEBUG - Capture command built form arguments in settings file - ['glc-capture', '--start', '-k', 'F4']
Main - DEBUG - Encode command built from arguments in settings file - ['gamecaster-encode.sh', '8000', '0']
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/gamecaster/gamecaster.py", line 386, in on_workingdirectory_browsebutton_clicked
    folderins = FolderChooser()
  File "/usr/lib/python2.7/site-packages/gamecaster/gamecaster.py", line 82, in __init__
    dialog = Gtk.FileChooserDialog("Select Folder", self, Gtk.FileChooserAction.SELECT_FOLDER, (Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL, "Select", Gtk.ResponseType.OK))
  File "/usr/lib/python2.7/site-packages/gi/overrides/__init__.py", line 175, in new_init
    return super_init_func(self, **new_kwargs)
  File "/usr/lib/python2.7/site-packages/gi/overrides/Gtk.py", line 500, in __init__
    self._init(*args, **new_kwargs)
  File "/usr/lib/python2.7/site-packages/gi/overrides/__init__.py", line 175, in new_init
    return super_init_func(self, **new_kwargs)
  File "/usr/lib/python2.7/site-packages/gi/overrides/__init__.py", line 175, in new_init
    return super_init_func(self, **new_kwargs)
TypeError: could not convert value for property `transient_for' from FolderChooser to GtkWindow
Main - DEBUG - Record button clicked and window initialized
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/gamecaster/gamecaster.py", line 403, in on_gamebinarychooser_browsebutton_clicked
    filename = fileins().filename
  File "/usr/lib/python2.7/site-packages/gamecaster/gamecaster.py", line 55, in __init__
    dialog = Gtk.FileChooserDialog("Select File", self, Gtk.FileChooserAction.OPEN, (Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL, Gtk.STOCK_OPEN, Gtk.ResponseType.OK))
  File "/usr/lib/python2.7/site-packages/gi/overrides/__init__.py", line 175, in new_init
    return super_init_func(self, **new_kwargs)
  File "/usr/lib/python2.7/site-packages/gi/overrides/Gtk.py", line 500, in __init__
    self._init(*args, **new_kwargs)
  File "/usr/lib/python2.7/site-packages/gi/overrides/__init__.py", line 175, in new_init
    return super_init_func(self, **new_kwargs)
  File "/usr/lib/python2.7/site-packages/gi/overrides/__init__.py", line 175, in new_init
    return super_init_func(self, **new_kwargs)
TypeError: could not convert value for property `transient_for' from FileChooser to GtkWindow