Various minor changes

  - Add style class for critical icon
  - Minor tweaks to content styles
  - Reorder event log content for responsiveness

Change-Id: Ibbe769a9c23d288db6b8e9db1a41b25d7b060999
Signed-off-by: Michael Davis <michael.s.davis@ibm.com>
diff --git a/app/common/styles/layout/content.scss b/app/common/styles/layout/content.scss
index 13dbe44..f91940c 100644
--- a/app/common/styles/layout/content.scss
+++ b/app/common/styles/layout/content.scss
@@ -37,7 +37,7 @@
 }
 
 .content-label {
-  color: darken($lightgrey, 10%);
+  color: lighten($darkgrey, 15%);
   text-transform: uppercase;
   font-weight: 700;
   font-size: .75em;