Merge branch 'pr/11778' into drop_recess_for_less

Conflicts:
	Gruntfile.js
	dist/css/bootstrap-theme.min.css
	dist/css/bootstrap.min.css

Gruntfile.js

@@ -110,10 +110,29 @@ module.exports = function (grunt) {
           'dist/css/<%= pkg.name %>-theme.css': 'less/theme.less'
         }
       },
-      minify: {
+    },
+
+    usebanner: {
+      dist: {
         options: {
-          compress: true,
-          report: 'min'
+          position: 'top',
+          banner: '<%= banner %>'
+        },
+        files: {
+          src: [
+            'dist/css/<%= pkg.name %>.css',
+            'dist/css/<%= pkg.name %>-theme.css',
+          ]
+        }
+      }
+    },
+
+    cssmin: {
+      compress: {
+        options: {
+          keepSpecialComments: 1,
+          report: 'min',
+          selectorsMergeMode: 'ie8'
         },
         files: {
           'dist/css/<%= pkg.name %>.min.css': 'dist/css/<%= pkg.name %>.css',
@@ -134,23 +153,6 @@ module.exports = function (grunt) {
       }
     },
 
-    usebanner: {
-      dist: {
-        options: {
-          position: 'top',
-          banner: '<%= banner %>'
-        },
-        files: {
-          src: [
-            'dist/css/<%= pkg.name %>.css',
-            'dist/css/<%= pkg.name %>.min.css',
-            'dist/css/<%= pkg.name %>-theme.css',
-            'dist/css/<%= pkg.name %>-theme.min.css',
-          ]
-        }
-      }
-    },
-
     copy: {
       fonts: {
         expand: true,
@@ -320,6 +322,7 @@ module.exports = function (grunt) {
   grunt.loadNpmTasks('grunt-contrib-concat');
   grunt.loadNpmTasks('grunt-contrib-connect');
   grunt.loadNpmTasks('grunt-contrib-copy');
+  grunt.loadNpmTasks('grunt-contrib-cssmin');
   grunt.loadNpmTasks('grunt-contrib-jshint');
   grunt.loadNpmTasks('grunt-contrib-less');
   grunt.loadNpmTasks('grunt-contrib-qunit');
@@ -348,7 +351,7 @@ module.exports = function (grunt) {
   grunt.registerTask('dist-js', ['concat', 'uglify']);
 
   // CSS distribution task.
-  grunt.registerTask('dist-css', ['less', 'csscomb', 'usebanner']);
+  grunt.registerTask('dist-css', ['less', 'cssmin', 'csscomb', 'usebanner']);
 
   // Fonts distribution task.
   grunt.registerTask('dist-fonts', ['copy']);

package.json

@@ -27,6 +27,7 @@
     , "grunt-contrib-concat": "~0.3.0"
     , "grunt-contrib-connect": "~0.5.0"
     , "grunt-contrib-copy": "~0.4.1"
+    , "grunt-contrib-cssmin": "~0.7.0"
     , "grunt-contrib-jshint": "~0.7.0"
     , "grunt-contrib-less": "~0.8.0"
     , "grunt-contrib-qunit": "~0.3.0"