Merge branch 'ce-to-ee' into 'master'

CE upstream

Closes gitlab-ce#27674

See merge request !1170

changelogs/unreleased/slash-commands-typo.yml

+---
+title: Fixed "substract" typo on /help/user/project/slash_commands
+merge_request: 8976
+author: Jason Aquino

db/migrate/20170204181513_add_index_to_labels_for_type_and_project.rb

+class AddIndexToLabelsForTypeAndProject < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def change
+    add_concurrent_index :labels, [:type, :project_id]
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20170130204620) do
+ActiveRecord::Schema.define(version: 20170204181513) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -650,6 +650,7 @@ ActiveRecord::Schema.define(version: 20170130204620) do
   end
 
   add_index "labels", ["group_id", "project_id", "title"], name: "index_labels_on_group_id_and_project_id_and_title", unique: true, using: :btree
+  add_index "labels", ["type", "project_id"], name: "index_labels_on_type_and_project_id", using: :btree
 
   create_table "ldap_group_links", force: :cascade do |t|
     t.string "cn", null: false

doc/user/project/slash_commands.md

@@ -32,6 +32,6 @@ do.
 | `/wip`                     | Toggle the Work In Progress status |
 | <code>/estimate &lt;1w 3d 2h 14m&gt;</code> | Set time estimate |
 | `/remove_estimate`       | Remove estimated time |
-| <code>/spend &lt;1h 30m &#124; -1h 5m&gt;</code> | Add or substract spent time |
+| <code>/spend &lt;1h 30m &#124; -1h 5m&gt;</code> | Add or subtract spent time |
 | `/remove_time_spent`       | Remove time spent |
 | `/target_branch <Branch Name>` | Set target branch for current merge request |