Add highlight.js 8.3 from the highlight.js standalone repo.

highlight_js_8.3.0/styles/tomorrow-night-bright.css

Index: highlight_js_8.3.0/styles/tomorrow-night-bright.css
diff --git a/highlight_js_8.3.0/styles/tomorrow-night-bright.css b/highlight_js_8.3.0/styles/tomorrow-night-bright.css
new file mode 100644
index 0000000000000000000000000000000000000000..781259a106fec82b662c6cb8eb03bedcf666a74d
--- /dev/null
+++ b/highlight_js_8.3.0/styles/tomorrow-night-bright.css
@@ -0,0 +1,94 @@
+/* Tomorrow Night Bright Theme */
+/* Original theme - https://github.com/chriskempson/tomorrow-theme */
+/* http://jmblog.github.com/color-themes-for-google-code-highlightjs */
+
+/* Tomorrow Comment */
+.hljs-comment,
+.hljs-title {
+  color: #969896;
+}
+
+/* Tomorrow Red */
+.hljs-variable,
+.hljs-attribute,
+.hljs-tag,
+.hljs-regexp,
+.ruby .hljs-constant,
+.xml .hljs-tag .hljs-title,
+.xml .hljs-pi,
+.xml .hljs-doctype,
+.html .hljs-doctype,
+.css .hljs-id,
+.css .hljs-class,
+.css .hljs-pseudo {
+  color: #d54e53;
+}
+
+/* Tomorrow Orange */
+.hljs-number,
+.hljs-preprocessor,
+.hljs-pragma,
+.hljs-built_in,
+.hljs-literal,
+.hljs-params,
+.hljs-constant {
+  color: #e78c45;
+}
+
+/* Tomorrow Yellow */
+.ruby .hljs-class .hljs-title,
+.css .hljs-rules .hljs-attribute {
+  color: #e7c547;
+}
+
+/* Tomorrow Green */
+.hljs-string,
+.hljs-value,
+.hljs-inheritance,
+.hljs-header,
+.ruby .hljs-symbol,
+.xml .hljs-cdata {
+  color: #b9ca4a;
+}
+
+/* Tomorrow Aqua */
+.css .hljs-hexcolor {
+  color: #70c0b1;
+}
+
+/* Tomorrow Blue */
+.hljs-function,
+.python .hljs-decorator,
+.python .hljs-title,
+.ruby .hljs-function .hljs-title,
+.ruby .hljs-title .hljs-keyword,
+.perl .hljs-sub,
+.javascript .hljs-title,
+.coffeescript .hljs-title {
+  color: #7aa6da;
+}
+
+/* Tomorrow Purple */
+.hljs-keyword,
+.javascript .hljs-function {
+  color: #c397d8;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: black;
+  color: #eaeaea;
+  padding: 0.5em;
+  -webkit-text-size-adjust: none;
+}
+
+.coffeescript .javascript,
+.javascript .xml,
+.tex .hljs-formula,
+.xml .javascript,
+.xml .vbscript,
+.xml .css,
+.xml .hljs-cdata {
+  opacity: 0.5;
+}