use wiki pages index for sidebar overflow and limit sidebar list to 15 pages

app/assets/javascripts/wikis.js.es6

@@ -55,6 +55,7 @@
     }
 
     renderSidebar() {
+      if (!this.sidebarEl) return;
       const { classList } = this.sidebarEl;
       if (this.sidebarExpanded || !this.sidebarCanCollapse()) {
         if (!classList.contains('right-sidebar-expanded')) {

app/controllers/projects/wikis_controller.rb

@@ -115,6 +115,8 @@ class Projects::WikisController < Projects::ApplicationController
 
     # Call #wiki to make sure the Wiki Repo is initialized
     @project_wiki.wiki
+
+    @sidebar_wiki_pages = @project_wiki.pages.first(15)
   rescue ProjectWiki::CouldNotCreateWikiError
     flash[:notice] = "Could not create Wiki Repository at this time. Please try again later."
     redirect_to project_path(@project)

app/helpers/nav_helper.rb

@@ -23,7 +23,6 @@ module NavHelper
     elsif current_path?('wikis#show') ||
       current_path?('wikis#edit') ||
       current_path?('wikis#history') ||
-      current_path?('wikis#pages') ||
       current_path?('wikis#git_access')
       "page-gutter wiki-sidebar right-sidebar-expanded"
     end

app/views/projects/wikis/_sidebar.html.haml

@@ -12,9 +12,12 @@
   .blocks-container
     .block.block-first
       %ul.wiki-pages
-        - @project_wiki.pages.each do |wiki_page|
+        - @sidebar_wiki_pages.each do |wiki_page|
           %li{ class: params[:id] == wiki_page.slug ? 'active' : '' }
             = link_to namespace_project_wiki_path(@project.namespace, @project, wiki_page) do
               = wiki_page.title.capitalize
+    .block
+      = link_to namespace_project_wiki_pages_path(@project.namespace, @project), class: 'btn btn-block' do
+        More Pages
 
 = render 'projects/wikis/new'

app/views/projects/wikis/pages.html.haml

@@ -3,13 +3,16 @@
 
 %div{ class: container_class }
   .wiki-page-header
-    %button.btn.btn-default.sidebar-toggle.js-sidebar-wiki-toggle{ role: "button", type: "button" }
-      = icon('angle-double-left')
 
     .nav-text
       %h2.wiki-page-title
         Wiki Pages
 
+    .nav-controls
+      = link_to namespace_project_wikis_git_access_path(@project.namespace, @project), class: 'btn' do
+        = icon('cloud-download')
+        Clone repository
+
   %ul.content-list
     - @wiki_pages.each do |wiki_page|
       %li
@@ -18,5 +21,3 @@
         .pull-right
           %small Last edited #{time_ago_with_tooltip(wiki_page.commit.authored_date)}
   = paginate @wiki_pages, theme: 'gitlab'
-
-= render 'sidebar'