Enable Stylelint rules for vendor prefixes

This commit also removes a bunch of vendor prefixes that were in the styles
but are no longer needed since PostCSS and Autoprefixer handles generating
them.

src/elements/emby-button/emby-button.scss

@@ -12,9 +12,6 @@
     /* These are getting an outline in opera tv browsers, which run chrome 30 */
     outline: none !important;
     outline-width: 0;
-    -moz-user-select: none;
-    -ms-user-select: none;
-    -webkit-user-select: none;
     user-select: none;
     cursor: pointer;
     z-index: 0;
@@ -97,9 +94,6 @@
     font-size: inherit;
     font-family: inherit;
     color: inherit;
-    -moz-user-select: none;
-    -ms-user-select: none;
-    -webkit-user-select: none;
     user-select: none;
     cursor: pointer;
     z-index: 0;

src/elements/emby-checkbox/emby-checkbox.scss

@@ -39,9 +39,6 @@
     margin: 0;
     padding: 0;
     opacity: 0;
-    -ms-appearance: none;
-    -moz-appearance: none;
-    -webkit-appearance: none;
     appearance: none;
     border: none;
 }
@@ -130,13 +127,3 @@
         padding: 0;
     }
 }
-
-@-webkit-keyframes repaintChrome {
-    from {
-        padding: 0;
-    }
-
-    to {
-        padding: 0;
-    }
-}

src/elements/emby-input/emby-input.scss

@@ -10,7 +10,6 @@
     font-size: 110%;
 
     /* prevent padding from causing width overflow */
-    -webkit-box-sizing: border-box;
     box-sizing: border-box;
     outline: none !important;
     -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
@@ -69,6 +68,5 @@
 }
 
 .emby-input-iconbutton {
-    -webkit-align-self: flex-end;
     align-self: flex-end;
 }

src/elements/emby-radio/emby-radio.scss

@@ -23,9 +23,6 @@
     margin: 0;
     padding: 0;
     opacity: 0;
-    -ms-appearance: none;
-    -moz-appearance: none;
-    -webkit-appearance: none;
     appearance: none;
     border: none;
 }
@@ -77,16 +74,12 @@
 
 .mdl-radio__inner-circle {
     transition-duration: 0.2s;
-    transition-property: -webkit-transform;
     transition-property: transform;
-    transition-property: transform, -webkit-transform;
-    -webkit-transform: scale(0);
     transform: scale(0);
     transform-origin: 50% 50%;
 }
 
 .mdl-radio__button:checked + .mdl-radio__circles .mdl-radio__inner-circle {
-    -webkit-transform: scale(1);
     transform: scale(1);
 }
 
@@ -110,15 +103,11 @@
     background: #00a4dc;
     opacity: 0.26;
     transition-duration: 0.2s;
-    transition-property: -webkit-transform;
     transition-property: transform;
-    transition-property: transform, -webkit-transform;
-    -webkit-transform: scale(0);
     transform: scale(0);
 }
 
 .mdl-radio.show-focus .mdl-radio__button:focus + .mdl-radio__circles .mdl-radio__focus-circle {
-    -webkit-transform: scale(1.75);
     transform: scale(1.75);
 }
 

src/elements/emby-select/emby-select.scss

@@ -31,8 +31,6 @@
     background: none !important;
     border-color: transparent !important;
     color: inherit !important;
-    -webkit-appearance: none;
-    -moz-appearance: none;
     appearance: none;
 }
 
@@ -59,7 +57,6 @@
 
 .emby-select-focusscale {
     transition: transform 180ms ease-out !important;
-    -webkit-transform-origin: center center;
     transform-origin: center center;
 }
 
@@ -99,7 +96,6 @@
 }
 
 .emby-select-withcolor {
-    -webkit-appearance: none;
     appearance: none;
     border-radius: 0.2em;
 }

src/elements/emby-slider/emby-slider.scss

@@ -1,26 +1,11 @@
-:-ms-input-placeholder {
-    appearance: none;
-    -ms-appearance: none;
-    height: 2.223em;
-    margin: 0;
-}
-
 .mdl-slider {
     width: 100%;
-    -webkit-appearance: none;
-    -moz-appearance: none;
-    -ms-appearance: none;
     appearance: none;
     height: 150%;/* 150% is needed, else ie and edge won't display the thumb properly */
     background: transparent;
-    -webkit-user-select: none;
-    -moz-user-select: none;
-    -ms-user-select: none;
     user-select: none;
     outline: 0;
     color: #00a4dc;
-    -webkit-align-self: center;
-    -ms-flex-item-align: center;
     align-self: center;
     z-index: 1;
     cursor: pointer;
@@ -68,7 +53,7 @@
 }
 
 .mdl-slider::-webkit-slider-thumb {
-    -webkit-appearance: none;
+    appearance: none;
     width: 1.08em;
     height: 1.08em;
     box-sizing: border-box;
@@ -88,7 +73,7 @@
 }
 
 .mdl-slider::-moz-range-thumb {
-    -moz-appearance: none;
+    appearance: none;
     width: 1.08em;
     height: 1.08em;
     box-sizing: border-box;
@@ -108,7 +93,7 @@
 }
 
 .mdl-slider::-ms-thumb {
-    -webkit-appearance: none;
+    appearance: none;
     width: 1.4em;
     height: 1.4em;
     box-sizing: border-box;

src/elements/emby-tabs/emby-tabs.scss

@@ -1,6 +1,4 @@
 .emby-tab-button {
-    -webkit-box-sizing: border-box;
-    -moz-box-sizing: border-box;
     box-sizing: border-box;
     background: transparent;
     box-shadow: none;

src/elements/emby-toggle/emby-toggle.scss

@@ -10,9 +10,6 @@
     padding: 0;
     overflow: visible;
     -webkit-touch-callout: none;
-    -webkit-user-select: none;
-    -moz-user-select: none;
-    -ms-user-select: none;
     user-select: none;
     flex-direction: row-reverse;
     justify-content: flex-end;
@@ -28,9 +25,6 @@
     margin: 0;
     padding: 0;
     opacity: 0;
-    -ms-appearance: none;
-    -moz-appearance: none;
-    -webkit-appearance: none;
     appearance: none;
     border: none;
 }
@@ -96,7 +90,6 @@
     position: absolute;
     top: 50%;
     left: 50%;
-    -webkit-transform: translate(-50%, -50%);
     transform: translate(-50%, -50%);
     display: inline-block;
     box-sizing: border-box;