adding top navigation bar in templates
adding subject field for newsletters
Merge pull request #13 from yogeshjain999/engine

some amendments in UI
Fix in test mail
news test mailer working now
Merge branch 'engine' of github.com:yogeshjain999/lightair into yogeshjain999-engine

Conflicts:
	app/workers/light/enqueue.rb
Merge branch 'yogeshjain999-engine' into engine
Added sendgrid settings