Issue #240 , added infinite scrolling
Issue #240 , filter added to competitions vew
Issue #240 , added delete button
Issue #240 , added infinete scrollig after filter
Merge branch 'C3_marwa-mehanna_#218_competition_crud' into C2_abuali_#240_competitions

Conflicts:
	Idearator/app/assets/stylesheets/competitions.css.scss
	Idearator/app/views/competitions/_index.html.erb
	Idearator/app/views/competitions/index.js.erb
	Idearator/app/views/layouts/_navigation.html.erb
	Idearator/lib/tasks/populate.rake
Issue #240 , add scenario for investor
Issue #240 , added message for no competitions
Merge branch 'C3_marwa-mehanna_#218_competition_crud' into C2_abuali_#240_competitions

Conflicts:
	Idearator/app/assets/javascripts/competitions.js
	Idearator/app/controllers/competitions_controller.rb
	Idearator/app/models/competition.rb