resolves some errors in php 5.4
re #69 - updating donation submission throbber styling.
re #69 - updating styling for donation submission throbber using only "processing" text
Added a check for parents on a form element before assuming it exists.

The VBO select all checkbox does not have parents and so would cause a php notice before this fix.
added a comment for posterity
Updated to 7.x-4.5