Misc CSS fixes

  * set max content width to 960px
  * created mixin for bold font
  * move app-header content to global header
  * minor global changes
  * changed input alignment for network config inputs
  * added pop-out button class
  * changed lightgrey color
  * fixed accordion header actions responsiveness
  * fixed input box border colors

Change-Id: Iffe26d526439d7f2bb6808528a975ab7374ff1b2
Signed-off-by: Michael Davis <michael.s.davis@ibm.com>
diff --git a/app/common/styles/layout/index.scss b/app/common/styles/layout/index.scss
index 6c33f26..4183519 100644
--- a/app/common/styles/layout/index.scss
+++ b/app/common/styles/layout/index.scss
@@ -1 +1,2 @@
+@import 'header';
 @import 'content';