add convert tool base view and download view
Add sns_share setting
Merge branch 'master' of github.com:zomeki/zomeki-development into apply_sns_share_to_gp_article

Conflicts:
	app/models/gp_article/content/doc.rb
	app/views/gp_article/admin/content/settings/_form.html.erb
Add sns_share to doc editing page
Add posting to facebook
Add repeat to holiday
Fix sns logout
Fix no method error while layout rendering
Update current schema
Apply sns share to gp_article doc
Merge branch 'master' of github.com:zomeki/zomeki-development

Conflicts:
	db/schema.rb
downloadとfile list機能の実装
変換設定モデルの追加
wgetコマンドに -E
パラメータを追加（text/htmlドキュメントに対して、htmlで保存）
変換情報の書き込み機能の実現
Copied tags from base
Add "share to sns with" to GpArticle::Doc
Doc list page now includes only public docs
Change default facebook scope
Merge branch 'master' of github.com:zomeki/zomeki-development