Impression counters, showing on idea page, allowing sorting idea-list by it

Conflicts:

	app/assets/stylesheets/pages.css.scss
Removed impressionist custom initializer
Added gem 'impressionist'

Conflicts:

	Gemfile
	Gemfile.lock
Seed data for proposals

Conflicts:

	db/seeds.rb
Made link for navigating to login page clickable on IE
Share idea on Fb after signature completion
Restored production email setup