MDL-57945 stylelint: Upgrade 7.12.0

This stylelint is consolodating and focusing the project
so there are some rule deprecations without real alternatives yet.

.stylelintrc

@@ -1,18 +1,18 @@
 {
     "rules": {
         "at-rule-empty-line-before": [ "always",
-          {"except": [ "blockless-group"], ignore: ["after-comment", "all-nested"]}
+          {"except": [ "blockless-after-blockless"], ignore: ["after-comment", "inside-block"]}
         ],
         "at-rule-name-case": "lower",
         "at-rule-name-space-after": "always-single-line",
         "at-rule-no-unknown": null, # Enabled for non-scss in grunt.
         "at-rule-semicolon-newline-after": "always",
+        "at-rule-semicolon-space-before": "never",
         "block-closing-brace-newline-after": "always",
-        "block-closing-brace-newline-before": "always-multi-line",
+        "block-closing-brace-newline-before": "always",
         "block-closing-brace-space-before": "always-single-line",
         "block-no-empty": true,
-        "block-no-single-line": true,
-        "block-opening-brace-newline-after": "always-multi-line",
+        "block-opening-brace-newline-after": "always",
         "block-opening-brace-space-after": "always-single-line",
         "block-opening-brace-space-before": "always",
         "color-hex-case": ["lower", { "severity": "warning" }],
@@ -21,7 +21,6 @@
         "declaration-bang-space-after": "never",
         "declaration-bang-space-before": "always",
         "declaration-block-no-duplicate-properties": true,
-        "declaration-block-no-ignored-properties": true,
         "declaration-block-no-shorthand-property-overrides": true,
         "declaration-block-semicolon-newline-after": "always-multi-line",
         "declaration-block-semicolon-space-after": "always-single-line",
@@ -32,6 +31,7 @@
         "declaration-colon-space-after": "always-single-line",
         "declaration-colon-space-before": "never",
         "declaration-no-important": true,
+        "font-family-no-duplicate-names": true,
         "function-calc-no-unspaced-operator": true,
         "function-comma-newline-after": "always-multi-line",
         "function-comma-space-after": "always-single-line",
@@ -41,7 +41,7 @@
         "function-name-case": "lower",
         "function-parentheses-newline-inside": "always-multi-line",
         "function-parentheses-space-inside": "never-single-line",
-        "function-url-data-uris": never,
+        "function-url-scheme-blacklist": ["data"],
         "function-whitespace-after": "always",
         "indentation": 4,
         "keyframe-declaration-no-important": true,
@@ -50,14 +50,12 @@
         "max-line-length": [132, { "severity": "warning" }],
         "media-feature-colon-space-after": "always",
         "media-feature-colon-space-before": "never",
-        "media-feature-no-missing-punctuation": true,
         "media-feature-parentheses-space-inside": "never",
         "media-feature-range-operator-space-after": "always",
         "media-feature-range-operator-space-before": "always",
         "media-query-list-comma-newline-after": "always-multi-line",
         "media-query-list-comma-space-after": "always-single-line",
         "media-query-list-comma-space-before": "never",
-        "no-browser-hacks": null, # Enabled for non-scss in grunt.
         "no-empty-source": true,
         "no-eol-whitespace": true,
         "no-extra-semicolons": [true, { "severity": "warning" }],
@@ -78,11 +76,10 @@
         "selector-pseudo-class-parentheses-space-inside": "never",
         "selector-pseudo-element-case": "lower",
         "selector-pseudo-element-no-unknown": true,
-        "selector-root-no-composition": true,
         "selector-type-case": "lower",
         "selector-type-no-unknown": true,
         "string-no-newline": true,
-        "time-no-imperceptible": true,
+        "time-min-milliseconds": 100,
         "unit-blacklist": ["pt"],
         "unit-case": "lower",
         "unit-no-unknown": true,

Gruntfile.js

@@ -194,7 +194,6 @@ module.exports = function(grunt) {
                         rules: {
                             // These rules have to be disabled in .stylelintrc for scss compat.
                             "at-rule-no-unknown": true,
-                            "no-browser-hacks": [true, {"severity": "warning"}]
                         }
                     }
                 },
@@ -211,7 +210,6 @@ module.exports = function(grunt) {
                         rules: {
                             // These rules have to be disabled in .stylelintrc for scss compat.
                             "at-rule-no-unknown": true,
-                            "no-browser-hacks": [true, {"severity": "warning"}]
                         }
                     }
                 }