[FIXED-756][3.2.x] Image file is missing for the gray theme

[meroy]

.../ext-3.2.x/resources/images/gray/grid/sort-hd.gif

The xtheme-gray.css file has that configured to pull from the gray dir.

.x-list-header-inner em.sort-asc, .x-list-header-inner em.sort-desc {
    background-image:url(../images/gray/grid/sort-hd.gif);
    border-color: #d0d0d0;
}

[meroy]

Here is another image missing for the gray theme.

.x-date-inner .x-date-selected a{
    background-color:#D8D8D8;
    background-image:url(../images/gray/glass-bg.gif);
        border-color:#DCDCDC;
}

[jayrobinson]

These images are unnecessary and have been removed from the CSS. Thank you.