Fix css.ucb.Content documentation

Make it more readable by adding a table

(cherry picked from commit e7b7b284)

Conflicts:
	offapi/com/sun/star/ucb/Content.idl

Change-Id: I31d3fc46993cad81d57ba15f77b8fbc797e4c541

odk/docs/common/ref/idl.css

@@ -126,6 +126,19 @@ body { background-color:#ffffff; }
 #adc-idlref .expl-table td,
 #adc-idlref .param-table td  { border: none; }
 
+#adc-idlref .devdoc td {
+    border-width: 1px;
+    padding: 5px;
+    border-style: inset;
+    border-color: gray;
+    background-color: white; }
+
+#adc-idlref .devdoc th {
+    border-width: 1px;
+    padding: 5px;
+    border-style: inset;
+    border-color: gray;
+    background-color: white; }
 
 /* Explanation of CSS classes: