[DOC] Update Supported Algorithms page and add info about TSNE (#988)

* Update supported algorithms

* Change layout

* Address comments

* Update doc/sources/algorithms.rst

* Update analytics script for docs

* Update nearest neighbors info

Author: outoftardis

doc/sources/_templates/layout.html

@@ -6,10 +6,12 @@
         var wapLocalCode = 'us-en'; // Dynamically set per localized site, see mapping table for values
         var wapSection = "scikit-learn"; // WAP team will give you a unique section for your site
         // Load TMS
-        (function () {
-          var url = 'https://www.intel.com/content/dam/www/global/wap/tms-loader.js'; // WAP file URL
-          var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true; po.src = url;
-          var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s);
-        })();
+        if(document.location.href.contains("intel.github.io/scikit-learn-intelex")){
+          (function () {
+            var url = 'https://www.intel.com/content/dam/www/global/wap/tms-loader.js'; // WAP file URL
+            var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true; po.src = url;
+            var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s);
+          })();
+      }
       </script>
 {% endblock %}