[IE] Table right alignment floated

[Garry Yao]

The 'align' attribute used on table element in IE actually makes the table right floated.

1. Load the following content:

   <p>
   	text line before table.
   </p>
   <table>
   	<tr>
   		<td>cell</td>
   		<td>cell</td>
   	</tr>
   	<tr>
   		<td>cell</td>
   		<td>cell</td>
   	</tr>
   </table>
   <p dir="rtl">
   	text line after table.
   </p>
   

2. Make selection in table, open properties dialog and select right alignment;

• Actual Result: table is floated at the right side (overlap the layout box of last line);
• Expected Result: table occupied line height in layout flow.