add navbar background hover variable and fix uneditable-input with append/prepend controls

docs/assets/css/bootstrap.css

@@ -913,6 +913,7 @@ input:focus:required:invalid:focus, textarea:focus:required:invalid:focus, selec
   border-radius: 3px 0 0 3px;
 }
 .input-append .uneditable-input {
+  border-left-color: #eee;
   border-right-color: #ccc;
 }
 .input-append .add-on {

less/forms.less

@@ -395,6 +395,7 @@ select:focus:required:invalid {
     .border-radius(3px 0 0 3px);
   }
   .uneditable-input {
+    border-left-color: #eee;
     border-right-color: #ccc;    
   }
   .add-on {

less/navbar.less

@@ -194,7 +194,7 @@
 }
 // Hover
 .navbar .nav > li > a:hover {
-  background-color: transparent;
+  background-color: @navbarLinkBackgroundHover; // "transparent" is default to differentiate :hover from .active
   color: @navbarLinkColorHover;
   text-decoration: none;
 }

less/variables.less

@@ -68,6 +68,7 @@
 @navbarHeight:                    40px;
 @navbarBackground:                @grayDarker;
 @navbarBackgroundHighlight:       @grayDark;
+@navbarLinkBackgroundHover:       transparent;
 
 @navbarText:                      @grayLight;
 @navbarLinkColor:                 @grayLight;