Disable stylelint to keep some vendor prefix

ui/src/app/dashboard/dashboard-card.scss

@@ -16,12 +16,12 @@
 
 .tb-dashboard-assigned-customers {
   display: block;
-  display: -webkit-box;
+  display: -webkit-box; /* stylelint-disable-line value-no-vendor-prefix */
   height: 34px;
   margin-bottom: 4px;
   overflow: hidden;
   text-overflow: ellipsis;
   -webkit-line-clamp: 2;
-  -webkit-box-orient: vertical;
+  -webkit-box-orient: vertical; /* stylelint-disable-line property-no-vendor-prefix */
 }
 

ui/src/scss/main.scss

@@ -42,7 +42,7 @@ textarea {
   word-wrap: normal;
   white-space: nowrap;
   direction: ltr;
-  -webkit-font-feature-settings: "liga";
+  -webkit-font-feature-settings: "liga"; /* stylelint-disable-line property-no-vendor-prefix */
 }
 
 a {

ui/src/scss/mixins.scss

@@ -15,6 +15,7 @@
  */
 @import "~compass-sass-mixins/lib/compass";
 
+/* stylelint-disable selector-no-vendor-prefix */
 @mixin input-placeholder {
   // replaces compass/css/user-interface/input-placeholder()
 
@@ -36,6 +37,7 @@
     @content;
   }
 }
+/* stylelint-enable selector-no-vendor-prefix */
 
 @mixin line-clamp($numLines: 1, $lineHeight: 1.412) {
   position: relative;