Fixes #14806: reset the text-shadow in the themed buttons

dist/css/bootstrap-theme.css

@@ -29,6 +29,14 @@
   -webkit-box-shadow: inset 0 3px 5px rgba(0, 0, 0, .125);
           box-shadow: inset 0 3px 5px rgba(0, 0, 0, .125);
 }
+.btn-default .badge,
+.btn-primary .badge,
+.btn-success .badge,
+.btn-info .badge,
+.btn-warning .badge,
+.btn-danger .badge {
+  text-shadow: none;
+}
 .btn:active,
 .btn.active {
   background-image: none;

docs/dist/css/bootstrap-theme.css

@@ -29,6 +29,14 @@
   -webkit-box-shadow: inset 0 3px 5px rgba(0, 0, 0, .125);
           box-shadow: inset 0 3px 5px rgba(0, 0, 0, .125);
 }
+.btn-default .badge,
+.btn-primary .badge,
+.btn-success .badge,
+.btn-info .badge,
+.btn-warning .badge,
+.btn-danger .badge {
+  text-shadow: none;
+}
 .btn:active,
 .btn.active {
   background-image: none;

less/theme.less

@@ -28,6 +28,10 @@
   &.active {
     .box-shadow(inset 0 3px 5px rgba(0,0,0,.125));
   }
+
+  .badge {
+    text-shadow: none;
+  }
 }
 
 // Mixin for generating new styles