relax SVN archive

The controller close button is now always accessible.

The controller close button now works better.

The method close_log() is now called handler_close(). Instead of calling self.Destroy(), it now
calls self.Close() allowing the controller to be re-opened.

Added access to the relax controller from the main window.

The 'View' menu has been created with the single entry 'Controller'. This has a new oxygen icon.
The menu entry executes the show_controller() method which simply calls self.controller.ShowModal().
The controller will need to be modified to be universally accessible and closable at any time.

Commented out the thread creation in the Controller.

These will be created by the specific analyses.

The controller is now being built and stored in the main GUI object.

This is accessible as self.controller or in other GUI objects as self.gui.controller. To see the
controller, its ShowModal() method must be called.

Import fixes for the relax controller window.

Renamed the 'relax_control' module to 'controller'. There is no need to prepend 'relax_' to this.

Renamed the Log_window class to Controller, as this dialog will be more than a log window.

Shifted the relax_control module down back into the gui_bieri package.

This is a GUI element that is independent of the specific analyses. The analysis specific code can
be shifted into the modules of gui_bieri.analyses, and the threads also started from there. This
window can be initialised in the main GUI class and then shown by the analyses' execute methods.

Removed a few args from gui_bieri.analyses.relax_control.start_modelfree().