diff: fix width - make it 100% of the page as before

kallithea/public/css/style.css

@@ -3191,6 +3191,7 b' input.perm_filter {'
 table.code-difftable {
     border-collapse: collapse;
     border-radius: 0px !important;
+    width: 100%;
 }
 table.code-difftable td {
     padding: 0 !important;