update assets from bootstrap@3.3.7

assets/less/bootstrap/buttons.less

@@ -1,7 +1,10 @@
+// stylelint-disable selector-no-qualifying-type
+
 //
 // Buttons
 // --------------------------------------------------
 
+
 // Base styles
 // --------------------------------------------------
 
@@ -10,12 +13,12 @@
   margin-bottom: 0; // For input.btn
   font-weight: @btn-font-weight;
   text-align: center;
+  white-space: nowrap;
   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;
-  white-space: nowrap;
   .button-size(@padding-base-vertical; @padding-base-horizontal; @font-size-base; @line-height-base; @btn-border-radius-base);
   .user-select(none);
 
@@ -37,16 +40,16 @@
 
   &:active,
   &.active {
-    outline: 0;
     background-image: none;
-    .box-shadow(inset 0 3px 5px rgba(0,0,0,0.125));
+    outline: 0;
+    .box-shadow(inset 0 3px 5px rgba(0, 0, 0, .125));
   }
 
   &.disabled,
   &[disabled],
   fieldset[disabled] & {
     cursor: @cursor-disabled;
-    .opacity(0.65);
+    .opacity(.65);
     .box-shadow(none);
   }
 
@@ -58,6 +61,7 @@
   }
 }
 
+
 // Alternate buttons
 // --------------------------------------------------
 
@@ -84,13 +88,14 @@
   .button-variant(@btn-danger-color; @btn-danger-bg; @btn-danger-border);
 }
 
+
 // Link buttons
 // -------------------------
 
 // Make a button look and behave like a link
 .btn-link {
+  font-weight: 400;
   color: @link-color;
-  font-weight: normal;
   border-radius: 0;
 
   &,
@@ -123,6 +128,7 @@
   }
 }
 
+
 // Button Sizes
 // --------------------------------------------------
 
@@ -138,6 +144,7 @@
   .button-size(@padding-xs-vertical; @padding-xs-horizontal; @font-size-small; @line-height-small; @btn-border-radius-small);
 }
 
+
 // Block button
 // --------------------------------------------------
 
@@ -152,9 +159,9 @@
 }
 
 // Specificity overrides
-input[type='submit'],
-input[type='reset'],
-input[type='button'] {
+input[type="submit"],
+input[type="reset"],
+input[type="button"] {
   &.btn-block {
     width: 100%;
   }