fix module index template to satisfy xhtml standard

sphinx/themes/agogo/static/agogo.css_t

@@ -487,6 +487,13 @@ img.toggler {
     cursor: pointer;
 }
 
+/* -- domain module index --------------------------------------------------- */
+
+table.modindextable td {
+    padding: 2px;
+    border-collapse: collapse;
+}
+
 /* -- viewcode extension ---------------------------------------------------- */
 
 .viewcode-link {

sphinx/themes/basic/domainindex.html

@@ -30,7 +30,7 @@
    {%- endfor %}
    </div>
 
-   <table class="indextable modindextable" cellspacing="0" cellpadding="2">
+   <table class="indextable modindextable">
    {%- for letter, entries in content %}
      <tr class="pcap"><td></td><td>&#160;</td><td></td></tr>
      <tr class="cap" id="cap-{{ letter }}"><td></td><td>

sphinx/themes/basic/static/basic.css_t

@@ -188,6 +188,13 @@ div.genindex-jumpbox {
     padding: 0.4em;
 }
 
+/* -- domain module index --------------------------------------------------- */
+
+table.modindextable td {
+    padding: 2px;
+    border-collapse: collapse;
+}
+
 /* -- general body styles --------------------------------------------------- */
 
 div.body p, div.body dd, div.body li, div.body blockquote {

sphinx/themes/epub/static/epub.css

@@ -175,6 +175,13 @@ img.toggler {
     cursor: pointer;
 }
 
+/* -- domain module index --------------------------------------------------- */
+
+table.modindextable td {
+    padding: 2px;
+    border-collapse: collapse;
+}
+
 /* -- general body styles --------------------------------------------------- */
 
 a.headerlink {

sphinx/themes/nonav/static/nonav.css

@@ -175,6 +175,13 @@ img.toggler {
     cursor: pointer;
 }
 
+/* -- domain module index --------------------------------------------------- */
+
+table.modindextable td {
+    padding: 2px;
+    border-collapse: collapse;
+}
+
 /* -- general body styles --------------------------------------------------- */
 
 a.headerlink {

sphinx/themes/scrolls/static/scrolls.css_t

@@ -326,6 +326,11 @@ table.modindextable {
     border: none;
 }
 
+table.modindextable td {
+    padding: 2px;
+    border-collapse: collapse;
+}
+
 table.modindextable img.toggler {
     margin-right: 10px;
 }

sphinx/themes/traditional/static/traditional.css_t

@@ -415,6 +415,13 @@ img.toggler {
     cursor: pointer;
 }
 
+/* :::: DOMAIN MODULE INDEX STYLES :::: */
+
+table.modindextable td {
+    padding: 2px;
+    border-collapse: collapse;
+}
+
 /* :::: GLOBAL STYLES :::: */
 
 p.subhead {