Fix thumb overlapping text at search-results page

Fix thumb overlapping text at search-results page.

dspace/modules/xmlui/src/main/webapp/themes/Participatorio-mobile/lib/m-tweaks.css

@@ -564,6 +564,10 @@ float: left;
 position: absolute;
 }
 
+div#aspect_discovery_SimpleSearch_div_search-results ul div.artifact-preview img {
+max-width: 60px;
+}
+    
 div#aspect_discovery_SimpleSearch_div_search-results ul div.artifact-description {
 padding-left: 70px;
 height: 100px;