Further fix content overflow. (#8682)

This reverts fix for all tables. It should fix #8617.

It also adds fix for overflow in $:/Manager 's content page, testcase
widget output. The fix for overflow $:/TagManager is reverted since it
caused the dropdown not to display properly.

core/ui/TagManager.tid

@@ -62,7 +62,6 @@ color: #bbb
 \end
 
 \whitespace trim
-<div class="tc-table-wrapper">
 <table class="tc-tag-manager-table">
 <tbody>
  <tr>
@@ -116,5 +115,4 @@ color: #bbb
  <td></td>
  </tr>
 </tbody>
-</table>
-</div>
+</table>

themes/tiddlywiki/vanilla/base.tid

@@ -2793,20 +2793,11 @@ a.tc-tiddlylink.tc-plugin-info:hover > .tc-plugin-info-chunk .tc-plugin-info-sta
  display: table;
 }
 
-/* Fix overflow in table and toc */
-.tc-tiddler-body .tc-tabbed-table-of-contents {
+/* Fix overflow toc, manager and testcase output */
+.tc-tiddler-body .tc-tabbed-table-of-contents, .tc-manager-list-item-content, .tc-test-case-output {
  overflow-x: auto;
 }
 
-.tc-tiddler-body > table {
- display: block;
- overflow: auto;
-}
-.tc-tiddler-body > table tbody {
- display: table;
- width: 100%;
-}
-
 /* A wrapper to fix table overflow */
 
 .tc-table-wrapper {