relax SVN archive

Created a GUI test for the auto R1 analysis.

This is not complete yet, and is still checking for NOE data.

Created the gui.misc.float_to_gui() function for converting floats to GUI strings.

Fixes for the auto NOE analysis GUI test.

Fix for the get_page_from_name() method - the page is now returned rather than relax data store object.

The analysis page list structure is now private.

Fix for the Analysis_controller.delete_analysis() method for when the last page is deleted.

The gui methods are now called properly and the switch to the previous page is not attempted.

Created a new menu item 'File->Close all analyses'.

This closes all analyses and resets the relax data store.

Added the dialog-close oxygen icon to the paths module.

Added the 16x16 and 48x48 versions of the dialog-close oxygen icon.

Missing import.