Add DIMM slot table to hardware status page

Add items at /redfish/v1/Systems/system/Memory endpoint to
DIMM slot table. The table is sortable and has a row expansion
to view details. The code is currently missing most properties
needed to match the design. This table will need to be revisited
when all properties are available.

Signed-off-by: Yoshie Muranaka <yoshiemuranaka@gmail.com>
Change-Id: I07cacf3403fe84431cb9fe0e4315069fc7baf27d
diff --git a/src/locales/en-US.json b/src/locales/en-US.json
index 84a2a60..4397b2c 100644
--- a/src/locales/en-US.json
+++ b/src/locales/en-US.json
@@ -127,6 +127,7 @@
     }
   },
   "pageHardwareStatus": {
+    "dimmSlot": "DIMM slot",
     "powerSupplies": "Power supplies",
     "system": "System",
     "table": {