Change categories when editing a rule

#165 
I think you could just do this:
```
					<dd><select id="rule_parent" name="rule_parent">
						<option value="0">{L_ACP_RULE_NO_PARENT}</option>
						<!-- BEGIN rulemenu -->
							<option value="{rulemenu.RULE_ID}"<!-- IF rulemenu.S_RULE_PARENT --> selected="selected"<!-- ENDIF --><!-- IF rulemenu.S_DISABLED --> disabled="disabled" class="disabled-option"<!-- ENDIF -->>{rulemenu.S_PADDING}{rulemenu.RULE_TITLE}</option>
						<!-- END rulemenu -->
					</select></dd>
```