Add touch-action: manipulate to buttons

dist/css/bootstrap.css

@@ -2750,6 +2750,8 @@ select[multiple].form-group-lg .form-control {
   text-align: center;
   white-space: nowrap;
   vertical-align: middle;
+  -ms-touch-action: manipulation;
+      touch-action: manipulation;
   cursor: pointer;
   -webkit-user-select: none;
      -moz-user-select: none;

docs/dist/css/bootstrap.css

@@ -2750,6 +2750,8 @@ select[multiple].form-group-lg .form-control {
   text-align: center;
   white-space: nowrap;
   vertical-align: middle;
+  -ms-touch-action: manipulation;
+      touch-action: manipulation;
   cursor: pointer;
   -webkit-user-select: none;
      -moz-user-select: none;

less/.csscomb.json

@@ -109,6 +109,8 @@
       "list-style-type",
       "list-style-image",
       "pointer-events",
+      "-ms-touch-action",
+      "touch-action",
       "cursor",
       "visibility",
       "zoom",

less/buttons.less

@@ -12,6 +12,7 @@
   font-weight: @btn-font-weight;
   text-align: center;
   vertical-align: middle;
+  touch-action: manipulation;
   cursor: pointer;
   background-image: none; // Reset unusual Firefox-on-Android default style; see https://github.com/necolas/normalize.css/issues/214
   border: 1px solid transparent;