rename nav to header to follow convention

website/source/assets/stylesheets/_nav.scss

@@ -1,90 +0,0 @@
-//
-// Header
-// - Project Specific
-// - edits should be made here
-// --------------------------------------------------
-
-#header {
-  flex-direction: row;
-  background-color: $black;
-  .navbar-brand {
-    .logo{
-      color: $green;
-      padding-left: 36px;
-      font-size: 22px;
-      line-height: 77px;
-      background: image-url('../images/logo-header.png') 0 0 no-repeat;
-      @include img-retina("../images/logo-header.png", "../images/logo-header@2x.png", $project-logo-width, $project-logo-height);
-      background-position: 0 center;
-
-      &:hover{
-        opacity: .6;
-      }
-    }
-
-    .by-hashicorp{
-      &:hover{
-        svg{
-          line{
-            opacity: .4;
-          }
-        }
-      }
-    }
-  }
-
-  .buttons{
-    margin-top: 2px; //baseline everything
-
-    .navigation-links{
-        float: right;
-    }
-
-    ul.navbar-nav{
-      li {
-        svg path{
-          fill: $white;
-        }
-      }
-    }
-  }
-
-  .main-links,
-  .external-links {
-    li > a {
-      @include project-a-style();
-    }
-  }
-}
-
-@media (max-width: 768px) {
-  #header {
-    .navbar-brand {
-
-    }
-  }
-}
-
-@media (max-width: 414px) {
-  #header {
-    .navbar-brand {
-      .logo{
-        padding-left: 37px;
-        font-size: 18px;
-        @include img-retina("../images/logo-header.png", "../images/logo-header@2x.png", $project-logo-width * .75, $project-logo-height * .75);
-        //background-position: 0 45%;
-      }
-    }
-  }
-}
-
-
-@media (max-width: 320px) {
-  #header {
-    .navbar-brand {
-      .logo{
-        font-size: 0 !important; //hide terraform text
-      }
-    }
-  }
-}

website/source/assets/stylesheets/application.scss

@@ -16,7 +16,7 @@
 @import 'hashicorp-shared/_hashicorp-header';
 @import 'hashicorp-shared/_hashicorp-sidebar';
 
-@import "_nav";
+@import "_header";
 @import "_footer";
 @import "_components";
 @import "_sidebar";