More simple patch review requests to resolve old bugs

[Timothy Arceri <t_arceri yahoo com au>]

Hi Guys,

Thanks for the positive response to my last few patches. Here is two more very simple ones for review.

1. Three line patch removing call to g_file_test(). According to the g_file_test() documentation 
g_file_test() should not be used this way so I think this change is the correct thing to do. 

https://bugzilla.gnome.org/show_bug.cgi?id=168530

2. This patch just marks a bunch of strings as translatable its just an updated version of an old patch.

https://bugzilla.gnome.org/show_bug.cgi?id=452949

Thanks,
Tim