Add Hardware status page and system table

Adds ability to see system information in table format with a row
expansion details view. Modified tables styles to add table borders.

Created global mixin for table data formatting:
- Show '--' for undefined or empty string values
- Map Redfish health status options to status-icon values

Signed-off-by: Yoshie Muranaka <yoshiemuranaka@gmail.com>
Change-Id: I5b45c37997647f5a265c1e84eb53f0b51699ee20
diff --git a/src/components/AppNavigation/AppNavigation.vue b/src/components/AppNavigation/AppNavigation.vue
index 8103558..09c1eb8 100644
--- a/src/components/AppNavigation/AppNavigation.vue
+++ b/src/components/AppNavigation/AppNavigation.vue
@@ -18,7 +18,7 @@
               <b-nav-item to="/health/event-logs">
                 {{ $t('appNavigation.eventLogs') }}
               </b-nav-item>
-              <b-nav-item href="javascript:void(0)">
+              <b-nav-item to="/health/hardware-status">
                 {{ $t('appNavigation.hardwareStatus') }}
               </b-nav-item>
               <b-nav-item to="/health/sensors">