fix bug about issue #155
renewal admin/gate new, edit view
Merge branch 'develop' of https://github.com/DonutWorks/Ari into develop
#163 modify header, table design
#157 add slack noti for donutworks operation'
#163 create admin/user/show & move buttons in view
#165 modifying routes.rb
help-block added.
bootstrap-scss gem added instead of raw bootstrap.
using gem to export excel
bug fixed about submitting without file
bug fixed about column name is blank
erase unused file
Merge branch 'develop' of https://github.com/DonutWorks/Ari into fix-bug-about-issue-#155

Conflicts:
	app/controllers/admin/import_controller.rb
Merge pull request #170 from DonutWorks/fix-bug-about-issue-#155

Fix bug about issue #155
check invalid format is in and show it
clickableRow -> clickable-row
fixed field-with-errors layout error
Merge branch 'develop' of github.com:DonutWorks/Ari into refactor/issue-161

Conflicts:
	Gemfile
	Gemfile.lock
	app/assets/stylesheets/application.css
Merge pull request #172 from DonutWorks/refactor/issue-161

renewal admin/gate new, edit view