[supportchannel] add summary

Goes over "PluginBrowserSummary", example for available screen choices:

	<screen name="PluginBrowserSummary" position="0,0" size="256,64">
		<widget source="parent.Title" render="Label" position="120,0" size="136,40" font="FdLcD;17" halign="center" valgin="bottom" />
		<widget source="entry" render="Label" position="0,42" size="256,22" zPosition="1" font="FdLcD;20" halign="center" valign="center" />
		<widget source="desc" render="Label" position="0,42" size="256,22" zPosition="1" font="FdLcD;20" halign="center" valign="center" />
	</screen>