Refresh master with initial release/0.24 snapshot (#332)

* Initial port of release/0.24 source code

* Fix additional headers

* Fix a typo in launch.json

src/sql/base/browser/ui/splitview/arrow-collapse-dark.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16"><path fill="#e8e8e8" d="M6 4v8l4-4-4-4zm1 2.414l1.586 1.586-1.586 1.586v-3.172z"/></svg>

src/sql/base/browser/ui/splitview/arrow-collapse.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16"><path fill="#646465" d="M6 4v8l4-4-4-4zm1 2.414l1.586 1.586-1.586 1.586v-3.172z"/></svg>

src/sql/base/browser/ui/splitview/arrow-expand-dark.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16"><path fill="#e8e8e8" d="M11 10.07h-5.656l5.656-5.656v5.656z"/></svg>

src/sql/base/browser/ui/splitview/arrow-expand.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16"><path fill="#646465" d="M11 10.07h-5.656l5.656-5.656v5.656z"/></svg>

src/sql/base/browser/ui/splitview/splitview.css

@@ -0,0 +1,98 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+.monaco-split-view {
+	position: relative;
+}
+
+.monaco-split-view > .split-view-view {
+	overflow: hidden;
+}
+
+.monaco-split-view.vertical > .split-view-view {
+	width: 100%;
+}
+
+.monaco-split-view.horizontal > .split-view-view {
+	height: 100%;
+}
+
+.monaco-split-view > .split-view-view > .header {
+	position: relative;
+	line-height: 22px;
+	font-size: 11px;
+	font-weight: bold;
+	text-transform: uppercase;
+	padding-left: 20px;
+	overflow: hidden;
+	display: flex;
+}
+
+.monaco-split-view > .split-view-view > .header.hide {
+	display: none;
+}
+
+/* Bold font style does not go well with CJK fonts */
+.monaco-split-view:lang(zh-Hans) > .split-view-view > .header,
+.monaco-split-view:lang(zh-Hant) > .split-view-view > .header,
+.monaco-split-view:lang(ja) > .split-view-view > .header,
+.monaco-split-view:lang(ko) > .split-view-view > .header { font-weight: normal; }
+
+.monaco-split-view > .split-view-view > .header.collapsible {
+	cursor: pointer;
+}
+
+.monaco-split-view > .split-view-view > .header.collapsible {
+	background-image: url('arrow-collapse.svg');
+	background-position: 2px center;
+	background-repeat: no-repeat;
+}
+
+.monaco-split-view > .split-view-view > .header.collapsible:not(.collapsed) {
+	background-image: url('arrow-expand.svg');
+	background-position: 2px center;
+	background-repeat: no-repeat;
+}
+
+.vs-dark .monaco-split-view > .split-view-view > .header.collapsible {
+	background-image: url('arrow-collapse-dark.svg');
+}
+
+.vs-dark .monaco-split-view > .split-view-view > .header.collapsible:not(.collapsed) {
+	background-image: url('arrow-expand-dark.svg');
+	background-position: 2px center;
+	background-repeat: no-repeat;
+}
+
+/* Animation */
+
+.monaco-split-view.animated > .split-view-view {
+	transition-duration: 0.15s;
+	-webkit-transition-duration: 0.15s;
+	-moz-transition-duration: 0.15s;
+	transition-timing-function: ease-out;
+	-webkit-transition-timing-function: ease-out;
+	-moz-transition-timing-function: ease-out;
+}
+
+.monaco-split-view.vertical.animated > .split-view-view {
+	transition-property: height;
+	-webkit-transition-property: height;
+	-moz-transition-property: height;
+}
+
+.monaco-split-view.horizontal.animated > .split-view-view {
+	transition-property: width;
+	-webkit-transition-property: width;
+	-moz-transition-property: width;
+}
+
+.hc-black .split-view-view .action-label {
+	background: none;
+}
+
+.hc-black .split-view-view > .header .action-label:before {
+	top: 4px !important;
+}