Feature: Display username and role in listener listing

This adds display of role name and updates display of username in
listener listing of mount points on admin interface.

admin/listclients.xsl

@@ -55,6 +55,8 @@
 								<thead>
 									<tr>
 										<td>IP</td>
+										<td>Username</td>
+										<td>Role</td>
 										<td>Sec. connected</td>
 										<td>User Agent</td>
 										<td>Action</td>
@@ -64,12 +66,9 @@
 									<xsl:variable name = "themount"><xsl:value-of select="@mount" /></xsl:variable>
 									<xsl:for-each select="listener">
 										<tr>
-											<td>
-												<xsl:value-of select="ip" />
-												<xsl:if test="username">
-													(<xsl:value-of select="username" />)
-												</xsl:if>
-											</td>
+											<td><xsl:value-of select="ip" /></td>
+											<td><xsl:value-of select="username" /></td>
+											<td><xsl:value-of select="role" /></td>
 											<td><xsl:value-of select="connected" /></td>
 											<td><xsl:value-of select="useragent" /></td>
 											<td><a href="killclient.xsl?mount={$themount}&amp;id={id}">Kick</a></td>