ui: use byte unit and power-of-two base for memory rrd graphs

To better match the gauge in the current status infobox in the same
summary panel, which is already using a format where KiB is 1024

the latter needs a (not yet bumped) widget toolkit update to 2.5-2 or
newer, just setting now to avoid forgetting it.

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

www/manager6/node/Summary.js

@@ -148,6 +148,8 @@ Ext.define('PVE.node.Summary', {
 			    title: gettext('Memory usage'),
 			    fields: ['memtotal', 'memused'],
 			    fieldTitles: [gettext('Total'), gettext('RAM usage')],
+			    unit: 'bytes',
+			    powerOfTwo: true,
 			    store: rrdstore,
 			},
 			{

www/manager6/panel/GuestSummary.js

@@ -82,6 +82,8 @@ Ext.define('PVE.qemu.Summary', {
 		    pveSelNode: me.pveSelNode,
 		    fields: ['maxmem', 'mem'],
 		    fieldTitles: [gettext('Total'), gettext('RAM usage')],
+		    unit: 'bytes',
+		    powerOfTwo: true,
 		    store: rrdstore,
 		},
 		{