Keyboard shortcut legend

New: Show keybaord shortcuts with '?'
New: ctrl+s will save settings

src/UI/Content/theme.less

@@ -16,6 +16,7 @@
 @import "../Rename/rename";
 @import "typeahead";
 @import "utilities";
+@import "../Hotkeys/hotkeys";
 
 .main-region {
   @media (min-width: @screen-lg-min) {
@@ -239,3 +240,10 @@ body {
     padding-top: 10px;
   }
 }
+
+.modal-header {
+  h3 {
+    margin-top    : 0px;
+    margin-bottom : 0px;
+  }
+}