upgrade rails to 4.2.0
remove gemset
renamed gemset
Merge pull request #1 from RacoonsGroup/AN-upgrade-to-rails-4.2.0

upgrade rails to 4.2.0
New design for admin
Design for tasks and articles udated
Some markup updates
Some markup updates. Some code moved to ProjectPresenter
Fix
Merge branch 'master' into ES-exporting-tasks

Conflicts:
	Gemfile
	Gemfile.lock
	app/views/tasks/index.html.slim
	db/schema.rb