zulip/templates/zerver/left_sidebar.html

          <div class="left-sidebar" id="left-sidebar">
              <div class="bottom_sidebar">
                      <ul id="global_filters" class="filters">
                          {# Special-case this link so we don't actually go to page top. #}
                          <li data-name="home"
                          class="global-filter active-filter home-link"><span class="filter-icon"><i class="icon-vector-home"></i></span><a href="#">{{ _('Home') }} <span class="count"><span class="value"></span></span></a></li>
                          <li data-name="private" class="global-filter"><span class="filter-icon"><i class="icon-vector-envelope"></i></span><a href="#narrow/is/private">{{ _('Private messages') }} <span class="count"><span class="value"></span></span></a></li>
                          <li data-name="starred" class="global-filter"><span class="filter-icon"><i class="icon-vector-star"></i></span><a href="#narrow/is/starred">{{ _('Starred messages') }}</a></li>
                          <li data-name="mentioned" class="global-filter"><span class="filter-icon"><i class="icon-vector-tag"></i></span><a href="#narrow/is/mentioned">{{ _('@-mentions') }}<span class="count"><span class="value"></span></span></a></li>
                      </ul>
                      <div id="streams_list" class="zoom-out">
                        <div id="streams_header" class="zoom-in-hide"><h4 class="sidebar-title" data-toggle="tooltip" title="{{ _('Subscribed streams') }}"><a href="">{{ _('STREAMS') }}</a></h4>
                          <a href="#streams">
                            <i id="streams_inline_cog" class='icon-vector-cog' data-toggle="tooltip" title="{{ _('Subscribe, add, or configure streams') }}"></i>
                          </a>
                          <a href=""><i id='streams_filter_icon' class='icon-vector-search' data-toggle="tooltip" title="{{ _('Filter streams list') }}"></i></a>
                          <a href="" id="join_unsub_stream">
                              <i class="icon-vector-plus" title="{{ _('Join stream')}}"></i>
                          </a>
                        </div>
                        <div id="topics_header">
                          <div class="all-streams-padding">
                            <ul class="filters">
                              <li data-name="all-streams">
                                <a href="" class="show-all-streams"> <i class="icon-vector-chevron-left"></i>{{ _('All streams') }}</a>
                              </li>
                            </ul>
                          </div>
                        </div>
                        <div id="stream-filters-container" class="scrolling_list">
                            <div class="input-append notdisplayed">
                              <input class="stream-list-filter" type="text" placeholder="{{ _('Search streams') }}" />
                              <button type="button" class="btn clear_search_button" id="clear_search_stream_button" disabled="disabled">
                                <i class="icon-vector-remove"></i>
                              </button>
                            </div>
                           <ul id="stream_filters" class="filters"></ul>
                        </div>
                      </div>
                      <div id="share-the-love">
                        <div id="share-the-love-expand-collapse">
                          <i class="toggle icon-vector-caret-right"></i><div id="sharethelove-header"><h4 class="sidebar-title">{{ _('SHARE THE LOVE') }}<span class="still-have-invites"> (<span class="invite-count">0</span>)</span></h4></div>
                        </div>
                        <div id="share-the-love-contents">
                          <div id="tell-a-friend-success" class="alert alert-success">
                            {% trans %}<strong>Thanks!</strong> A hand-crafted, artisanal invite is on the way.{% endtrans %}
                          </div>
                          <div class="still-have-invites" id="encouraging-invite-message">
                            <p>
                              {{ _("Know someone who would love Zulip for their company or group? Invite 'em!") }}
                            </p>
                          </div>
                          <div class="no-more-invites">
                            <p>
                              {% trans %}
                              We'll have more invites for
                              you soon, but for now, enjoy
                              this <a target="_blank"
                              href="http://www.youtube.com/watch?v=PW71En5Pa5s#t=2m01s">song
                              that expresses how we feel when you're
                              logged out</a>.
                              {% endtrans %}
                            </p>
                          </div>
                          <div class="still-have-invites">
                            {#  Many of these values are set by the initialization code in referral.js  #}
                            <form id="referral-form">
                              <input class="input-block-level required" type="email" name="email" />
                              <label for="email" generated="true" class="text-error"></label>
                            </form>
                          </div>
                          <div class="invite-count-area">
                            <span id="invite-hearts"></span>
                            <small class="pull-right"><span class="invite-count">0 {{ _('invites remaining') }}</span></small>
                          </div>
                        </div>
                      </div>
              </div>
          </div>