[ticket/207] Use different template var for redirect and fix portal link

styles/subsilver2/template/portal/modules/login_box_side.html

@@ -17,7 +17,7 @@
 			<!-- ENDIF -->
 			<!-- ENDIF -->
 			<br />
-			<input type="hidden" name="redirect" value="{U_PORTAL}" />
+			<input type="hidden" name="redirect" value="{U_PORTAL_REDIRECT}" />
 			<input type="submit" name="login" tabindex="5" value="{L_LOGIN}" class="button1" />
 		</td>
 	</tr>