Don't show the stream list on Humbug for MIT.

(imported from commit d9f952aaeb910a7c57ce1174141686331224c8c0)

templates/zephyr/index.html

@@ -120,10 +120,10 @@ var people_list = [
                           {# Special-case this link so we don't actually go to page top. #}
                           <li id="filthome" class="active-filter"><a href="#" onclick="narrow.deactivate();return false" >Home</a></li>
                       </div>
-                      <hr>
+                      <hr id="stream_filters_sep">
                       <div id="stream_filters">
                       </div>
-                      <hr>
+                      <hr id="personal_filters_sep">
                       <div id="personal_filters">
                           <li id="filtpers"><a href="#narrow/is/private-message">All private messages</a></li>
                       </div>

zephyr/static/js/subs.js

@@ -97,6 +97,7 @@ function create_sub(stream_name, attrs) {
                             subscribed: true, in_home_view: true, invite_only: false}, attrs);
     stream_info[stream_name.toLowerCase()] = sub;
     if (sub.subscribed) {
+        // This will do nothing on MIT
         ui.add_narrow_filter(stream_name, "stream", "#narrow/stream/" + encodeURIComponent(stream_name));
     }
     return sub;
@@ -140,6 +141,7 @@ function mark_subscribed(stream_name, attrs) {
         add_sub_to_table(sub);
     } else if (! sub.subscribed) {
         sub.subscribed = true;
+        // This will do nothing on MIT
         ui.add_narrow_filter(stream_name, "stream", "#narrow/stream/" + encodeURIComponent(stream_name));
         var button = button_for_sub(sub);
         if (button.length !== 0) {

zephyr/static/js/ui.js

@@ -259,6 +259,12 @@ function resizehandler(e) {
 $(function () {
     // When the user's profile picture loads this can change the height of the sidebar
     $("img.gravatar-profile").bind('load', resizehandler);
+
+    // We don't have a stream list at MIT.
+    if (domain === "mit.edu") {
+        $("#stream_filters").remove();
+        $("#stream_filters_sep").remove();
+    }
 });
 
 var old_label;
@@ -873,6 +879,18 @@ function sort_narrow_list() {
 exports.add_narrow_filter = function(name, type, uri) {
     var list_item;
 
+    /*
+     * We don't give MIT a stream list currently since that would likely be
+     * overwhelming for users given the vast number of streams MIT users are
+     * commonly subscribed to.
+     *
+     * This will not be as much of an issue once we do prioritization of streams
+     * in the list.
+     */
+    if (domain === "mit.edu" && type === "stream") {
+        return false;
+    }
+
     if ($("#" + type + "_filters li[data-name='" + encodeURIComponent(name) + "']").length) {
         // already exists
         return false;