Revert "Part 2. Hide and disable Keyboard Shortcuts, because they make using Ctrl-C to copy etc impossible."

This reverts commit 94391d4cde7aed6e37efc6a9127b23ef0c2bd323.

client/components/sidebar/sidebar.jade

@@ -5,12 +5,10 @@ template(name="sidebar")
     //  title="{{showTongueTitle}}")
     //  i.fa.fa-navicon
     .sidebar-actions
-      .sidebar-shortcuts
-         
-         
-        //a.board-header-btn.js-shortcuts(title="{{_ 'keyboard-shortcuts' }}")
-        //  i.fa.fa-keyboard-o
-        //  span {{_ 'keyboard-shortcuts' }}
+      //.sidebar-shortcuts
+      //  a.board-header-btn.js-shortcuts(title="{{_ 'keyboard-shortcuts' }}")
+      //    i.fa.fa-keyboard-o
+      //    span {{_ 'keyboard-shortcuts' }}
       a.sidebar-xmark.js-close-sidebar ✕
     .sidebar-content.js-board-sidebar-content
       //a.hide-btn.js-hide-sidebar