Adds code for scenario add new challenge
Fixes merge conflicts
Adds code for scenario Save a challenge proposal
Adds code for scenario Revoke pending challenge
Adds code for scenario revoke approved challenge
Adds code for scenario view declined challenges
Adds code for scenario view declined challenges
Adds code for scenario view declined challenges
Minor improvements
Adds code for scenario resubmit
Merge branch 'addchallenges' of github.com:boersmamarcel/challengesplatform into addchallenges
Let's remove Marcels keys real good...
Changed definition of a "denied" challenge
It now checks whether a challenge is a proposal for the second (or more) time (-> count)
new websteps

Conflicts:
	features/dashboard_participant.feature
	features/step_definitions/login_steps.rb
Fixje
Tests added
Added editing-restrictions and more...
Merge branch 'addchallenges' of github.com:boersmamarcel/challengesplatform into addchallenges

Conflicts:
	features/step_definitions/login_steps.rb
Removed ambiguous match for supervisor login
Challenge view
Merge branch 'addchallenges' of https://github.com/boersmamarcel/challengesplatform into addchallenges