Implements #173

Public view for suggested actions as well as resources has been
completelly redesigned.

Private side for this feature has been adapted as well in order to meet
the requirements.

spec/models/proposal_executed_dashboard_action_spec.rb

@@ -5,8 +5,7 @@ describe ProposalExecutedDashboardAction do
     build :proposal_executed_dashboard_action, 
           proposal: proposal,
           proposal_dashboard_action: proposal_dashboard_action,
-          executed_at: executed_at,
-          comments: comments
+          executed_at: executed_at
   end
 
   let(:proposal) { create :proposal }
@@ -15,7 +14,6 @@ describe ProposalExecutedDashboardAction do
   end
   let(:request_to_administrators) { false }
   let(:executed_at) { Time.current }
-  let(:comments) { '' }
 
   it { should be_valid }
 
@@ -40,17 +38,7 @@ describe ProposalExecutedDashboardAction do
   context 'when the action sends a request to the administrators' do
     let(:request_to_administrators) { true }
 
-    context 'and comments are blank' do
-      let(:comments) { '' }
-
-      it { should_not be_valid }
-    end
-
-    context 'and comments have value' do
-      let(:comments) { Faker::Lorem.sentence }
-
-      it { should be_valid }
-    end
+    it { should be_valid }
   end
 
   context 'when it has been already executed' do