TPAC: Remove explicit width on "View my list" button

TPAC: Remove explicit width on "View my list" button

.cached_list_div, which defines the style for the "View my list" button
on the TPAC button bar once an item has been added to a temporary list,
is given an explicit width of 111px, which is problematic for a number
of reasons:

1. If the font-size of the base style is increased, then the text will
   likely wrap.
2. Translations tend to be longer than English, and indeed in fr-CA
   "Afficher ma liste" ends up wrapping onto a second line, which makes
   the button bar look weird.

Accordingly, remove the explicit "width:111px" from the style definition
for .cached_list_div.

Signed-off-by: Dan Scott <dscott@laurentian.ca>
Signed-off-by: Ben Shum <bshum@biblio.org>