docs: deploy docs using netlify (#4774)

This adds in the legacy docs into the repo and enables automatic deployment via netlify. The netlify-docs.js script will error out the build on netlify on master if we're not on a tagged commit so that it won't redeploy the docs unless there's a new release. If we're not on master or on master with a tagged commit, it will process with the deploy.
Also, this removes the API docs from being published with npm, fixes #4609.

docs/legacy-docs/api/js/highlight-syntax.js

@@ -0,0 +1,31 @@
+BCLSHighlighter = (function(hljs) {
+    var codeBlocks = document.querySelectorAll('pre>code'),
+        i,
+        iMax,
+        txt,
+        reLT = new RegExp('<', 'g'),
+        reGT = new RegExp('>;', 'g');
+
+    /**
+     * tests for all the ways a variable might be undefined or not have a value
+     * @param {*} x the variable to test
+     * @return {Boolean} true if variable is defined and has a value
+     */
+    function isDefined(x) {
+        if (x === '' || x === null || x === undefined || x === NaN) {
+            return false;
+        }
+        return true;
+    };
+
+    if (isDefined(codeBlocks)) {
+        iMax = codeBlocks.length;
+        for (i = 0; i < iMax; i++) {
+            txt = codeBlocks[i].innerHTML.toString();
+            txt = txt.replace(reLT, '&lt;');
+            txt = txt.replace(reGT, '&gt;');
+            codeBlocks[i].innerHTML = txt;
+            hljs.highlightBlock(codeBlocks[i]);
+        }
+    }
+})(hljs);