Removed trailing whitespaces

Changed hard tabs to soft tabs

less/mixins.less

@@ -158,9 +158,9 @@
 // Default value is `visible`, but can be changed to `hidden`
 // See git pull https://github.com/dannykeane/bootstrap.git backface-visibility for examples
 .backface-visibility(@visibility){
-	-webkit-backface-visibility: @visibility;
-	   -moz-backface-visibility: @visibility;
-	        backface-visibility: @visibility;
+  -webkit-backface-visibility: @visibility;
+     -moz-backface-visibility: @visibility;
+          backface-visibility: @visibility;
 }
 
 // Background clipping

less/pagination.less

@@ -6,7 +6,7 @@
   padding-left: 0;
   margin: @line-height-computed 0;
   border-radius: @border-radius-base;
-  
+
   > li {
     display: inline; // Remove list-style and block-level defaults
     > a,
@@ -33,7 +33,7 @@
       }
     }
   }
-  
+
   > li > a:hover,
   > li > a:focus,
   > .active > a,
@@ -45,7 +45,7 @@
     color: @pagination-active-color;
     cursor: default;
   }
-  
+
   > .disabled {
     > span,
     > a,