MAGETWO-35182: The link of "URL" type breaks "edit Downloadable" Backend page

- CR fixes

Author: Evgeniy Kolesov

app/design/adminhtml/Magento/backend/Magento_Downloadable/web/css/source/_module.less

@@ -23,8 +23,10 @@
     .col-action {
         width: 1px;
     }
-    td.col-limit {
-        white-space: nowrap;
+    td {
+        &.col-limit {
+            white-space: nowrap;
+        }
     }
     .admin__control-table {
         .admin__control-text {

app/design/adminhtml/Magento/backend/web/css/override.less

@@ -395,7 +395,7 @@ nav ol {
 .admin__control-table th {
   background: #efefef;
   border: 0;
-  border-bottom: 1px solid #fff;
+  border-bottom: 1px solid #ffffff;
   padding: 1.3rem 2.5rem 1.3rem 0;
   text-align: left;
 }
@@ -3283,6 +3283,10 @@ fieldset[disabled] .admin__control-text + .ui-datepicker-trigger {
   font-size: 1.7rem;
   transition: color 0.1s linear;
 }
+.admin__menu .submenu-close:hover {
+  cursor: pointer;
+  text-decoration: none;
+}
 .admin__menu .submenu-close:hover:before {
   color: #ffffff;
 }

app/design/adminhtml/Magento/backend/web/css/source/forms/_control-table.less

@@ -26,9 +26,9 @@
     }
     td,
     th {
-        background: #efefef;
+        background: @color-white-dark-smoke;
         border: 0;
-        border-bottom: 1px solid #fff;
+        border-bottom: 1px solid @color-white;
         padding: 1.3rem 2.5rem 1.3rem 0;
         text-align: left;
         &:first-child {
@@ -38,14 +38,16 @@
     th {
         border: 0;
         vertical-align: bottom;
-        color: #303030;
+        color: @color-very-dark-gray-black;
         font-size: @font-size__base;
         font-weight: @font-weight__semibold;
         padding-bottom: 0;
         &._required {
-            span:after {
-                color: @field-label__required__color;
-                content: '*';
+            span {
+                &:after {
+                    color: @field-label__required__color;
+                    content: '*';
+                }
             }
         }
     }

dev/tools/grunt/configs/watch.js

@@ -25,6 +25,12 @@ var watchOptions = {
         "files": "<%= path.less.setup %>/**/*.less",
         "tasks": "less:setup"
     },
+    "reload": {
+        "files": "<%= path.pub %>/**/*.css",
+        "options": {
+            livereload: true
+        }
+    },
     "backendMigration": {
         "files": [
             "<%= combo.autopath(\"backend\",\"pub\") %>/css/styles.css"

lib/web/css/source/lib/variables/_colors.less

@@ -33,6 +33,7 @@
 @color-gray94: #f0f0f0;
 @color-gray95: #f2f2f2;
 @color-white-smoke: #f5f5f5;
+@color-white-dark-smoke: #efefef;
 @color-white-fog: #f8f8f8;
 
 @color-gray-light0: #f6f6f6;