Avoid table overflowing in modals

Some table fields in modals may overflow if they contain a
very long word, for example the metadata td's in the create event modal
on the summary page. This commit fixes that by specifying word break
bevahiour for td's.

Author: Arnei

src/styles/components/modals/_modal-base.scss

@@ -283,6 +283,7 @@
                 line-height: 25px !important;
                 padding-top: 4px;
                 padding-bottom: 4px;
+                word-break: break-word;
 
                 > a {
                     float: none;