Implements #144

Creates the basic layout for the dashboard

app/controllers/proposals_dashboard_controller.rb

@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+# Proposals dashboard
+class ProposalsDashboardController < ApplicationController
+  before_action :authenticate_user!
+
+  helper_method :proposal
+  respond_to :html
+  layout 'proposals_dashboard'
+
+  def index
+    authorize! :dashboard, proposal
+  end
+
+  private
+
+  def proposal
+    @proposal ||= Proposal.find(params[:proposal_id])
+  end
+end