[gDesklets] LoadingFeedback is a file now

[Mario González <mgonzalez mandriva com>]

Hello:

 LoadingFeedback is a class located in Starter.py file so far, but now
with this patch is a standalone file.

This was written in Started.py:

 #
 # Class for giving feedback while loading a display.
 #
 # TODO: move into its own file
 #

Patch:
http://media.mgonzalez.cl/gdesklets/gdesklets_0.3x_LoadingFeedback.patch