Add "Import all projects" button to GitHub and GitLab import pages.

Closes #1963.

app/assets/javascripts/importer_status.js.coffee

@@ -4,7 +4,7 @@ class @ImporterStatus
     this.setAutoUpdate()
 
   initStatusPage: ->
-    $(".btn-add-to-import").click (event) =>
+    $(".js-add-to-import").click (event) =>
       new_namespace = null
       tr = $(event.currentTarget).closest("tr")
       id = tr.attr("id").replace("repo_", "")
@@ -13,6 +13,10 @@ class @ImporterStatus
         tr.find(".import-target").empty().append(new_namespace + "/" + tr.find(".import-target").data("project_name"))
       $.post @import_url, {repo_id: id, new_namespace: new_namespace}, dataType: 'script'
 
+    $(".js-import-all").click (event) =>
+      $(".js-add-to-import").each ->
+        $(this).click()
+  
   setAutoUpdate: ->
     setInterval (=>
       $.get @jobs_url, (data) =>

app/views/import/github/status.html.haml

@@ -4,8 +4,10 @@
 
 %p.light
   Select projects you want to import.
-
 %hr
+%p
+  = button_tag 'Import all projects', class: "btn btn-success js-import-all"
+
 %table.table.import-jobs
   %thead
     %tr
@@ -32,7 +34,7 @@
         %td.import-target
           = repo.full_name
         %td.import-actions.job-status
-          = button_tag "Add", class: "btn btn-add-to-import"
+          = button_tag "Import", class: "btn js-add-to-import"
 
 :coffeescript
   $ ->

app/views/import/gitlab/status.html.haml

@@ -4,8 +4,10 @@
 
 %p.light
   Select projects you want to import.
-
 %hr
+%p
+  = button_tag 'Import all projects', class: "btn btn-success js-import-all"
+
 %table.table.import-jobs
   %thead
     %tr
@@ -32,8 +34,8 @@
         %td.import-target
           = repo["path_with_namespace"]
         %td.import-actions.job-status
-          = button_tag "Add", class: "btn btn-add-to-import"
+          = button_tag "Import", class: "btn js-add-to-import"
 
 :coffeescript
   $ ->
-    new ImporterStatus("#{jobs_import_gitlab_path}", "#{import_gitlab_url}")
+    new ImporterStatus("#{jobs_import_gitlab_path}", "#{import_gitlab_path}")