Add last reset time to server power operations page

 - Timestamp is displayed to inform user of last
   power operation

Signed-off-by: Dixsie Wolmers <dixsie@ibm.com>
Change-Id: I14c23ff56b3a0cf134c0ad2d831290971d93e293
diff --git a/src/locales/en-US.json b/src/locales/en-US.json
index 0fde253..cc99373 100644
--- a/src/locales/en-US.json
+++ b/src/locales/en-US.json
@@ -540,6 +540,7 @@
     "hostStatus": "Host status",
     "immediateReboot": "Immediate – Server reboots without OS shutting down; may cause data corruption",
     "immediateShutdown": "Immediate - Server shuts down without OS shutting down; may cause data corruption",
+    "lastPowerOperation": "Last power operation",
     "oneTimeBootWarning": "Pending one time boot. Next boot will be performed with the specified one time boot settings. Subsequent boots will be performed with the default settings.",
     "operationInProgress": "There are no options to display while a power operation is in progress. When complete, power operations will be displayed here.",
     "operations": "Operations",