Tried to align form input vertically with other elements for top nav

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/assets/stylesheets/framework/nav.scss

@@ -84,11 +84,13 @@
     > .btn {
       display: inline-block;
       margin-left: 10px;
-      margin-top: -3px;
     }
     input {
+      height: 34px;
       display: inline-block;
+      position: relative;
+      top: 1px;
       /* Medium devices (desktops, 992px and up) */
       @media (min-width: $screen-md-min) { width: 200px; }
@@ -105,10 +107,6 @@
       }
     }
-    .dropdown-toggle.btn {
-      margin-top: -3px;
-    }
-
     /* Hide on extra small devices (phones) */
     @media (max-width: $screen-xs-max) {
       display: none;

app/views/dashboard/_projects_head.html.haml

@@ -8,7 +8,7 @@
     = nav_link(page: starred_dashboard_projects_path) do
       = link_to starred_dashboard_projects_path, title: 'Starred Projects', data: {placement: 'right'} do
         Starred Projects
-    = nav_link(page: [explore_root_path, trending_explore_projects_path, starred_explore_projects_path, explore_projects_path], html_options: { class: 'hidden-xs' }) do
+    = nav_link(page: [explore_root_path, trending_explore_projects_path, starred_explore_projects_path, explore_projects_path]) do
       = link_to explore_root_path, title: 'Explore', data: {placement: 'right'} do
         Explore Projects