MB-8329: recover showing of short document part in docs list

It partially reverts commit 585c584ce8255116b31ee13eb6451515e501cdf0.

With the following part of revert _not applied_ (i.e. retained).

  diff --git a/priv/public/index.html b/priv/public/index.html
  index 12e14b5..59d1668 100644
  --- a/priv/public/index.html
  +++ b/priv/public/index.html
  @@ -1255,6 +1255,10 @@
                           <label for="{%= prefix %}_filter_group_level">group_level</label>
                           <input id="{%= prefix %}_filter_group_level" name="group_level" type="text">
                         </div><!--{% }%}-->
  +                      <!--{% if (items.includeDocs) {%}--><div>
  +                        <label for="{%= prefix %}_filter_include_docs">include_docs</label>
  +                        <input id="{%= prefix %}_filter_include_docs" name="include_docs" type="checkbox">
  +                      </div><!--{% }%}-->
                         <!--{% if (items.inclusiveEnd) {%}--><div>
                           <label for="{%= prefix %}_filter_inclusive_end">inclusive_end</label>
                           <input id="{%= prefix %}_filter_inclusive_end" name="inclusive_end" type="checkbox">
  diff --git a/priv/public/js/filter.js b/priv/public/js/filter.js
  index d8e173a..de099fd 100644
  --- a/priv/public/js/filter.js
  +++ b/priv/public/js/filter.js
  @@ -54,6 +54,7 @@ Filter.prototype = {
         keys: true,
         key: true,
         inclusiveEnd: true,
  +      includeDocs: true,
         groupLevel: true,
         group: true,
         endkeyDocid: true,

Change-Id: I13dff3c0f6bd17fe9872d2a79f8f4c4dec7fde66
Reviewed-on: http://review.couchbase.org/26571
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Reviewed-by: Aliaksey Artamonau <aliaksiej.artamonau@gmail.com>