Fix basic style issues with rubocop

app/controllers/admin/difficulty_levels_controller.rb

@@ -25,6 +25,5 @@ class Admin::DifficultyLevelsController < ApplicationController
       flash[:error] = "Difficulty Levels update failed."
       redirect_to(admin_conference_difficulty_levels_path(:conference_id => @conference.short_title))
     end
-
   end
 end

app/controllers/admin/events_controller.rb

@@ -18,7 +18,7 @@ module Admin
 
       @mystates = []
       @mytypes = []
-      @eventstats = Hash.new
+      @eventstats = {}
       @totallength = 0
 
       @machine_states.each do |mystate|
@@ -50,7 +50,7 @@ module Admin
               @totallength += myevent.event_type.length
             end
 
-            if @eventstats[mytype.title] == nil
+            if @eventstats[mytype.title].nil?
               @eventstats[mytype.title] = { 'count' => events_mytype.count,
                                             'length' => events_mytype.count * mytype.length }
             end
@@ -150,7 +150,7 @@ module Admin
       @event = Event.find(params[:id])
       @ratings = @event.votes.includes(:user)
 
-      if votes = current_user.votes.find_by_event_id(params[:id])
+      if (votes = current_user.votes.find_by_event_id(params[:id]))
         votes.update_attributes(rating: params[:rating])
       else
         @myvote = @event.votes.build

app/controllers/admin/questions_controller.rb

@@ -79,7 +79,7 @@ class Admin::QuestionsController < ApplicationController
               a.delete
             end
             flash[:notice] = "Deleted question: #{@question.title} and its answers: #{@question.answers.map {|a| a.title}.join ','}"
-        end
+          end
         rescue ActiveRecord::RecordInvalid
           flash[:error] = "Could not delete question."
         end
@@ -91,6 +91,6 @@ class Admin::QuestionsController < ApplicationController
     end
 
     @questions = Question.where(:global => true).all | Question.where(:conference_id => @conference.id)
-    @questions_conference = @conference.questions    
+    @questions_conference = @conference.questions
   end
 end

app/controllers/admin/social_events_controller.rb

@@ -11,7 +11,5 @@ class Admin::SocialEventsController < ApplicationController
     else
       redirect_to(admin_conference_social_events_path(:conference_id => @conference.short_title), :notice => 'Social events update failed.')
     end
-
   end
-
 end

app/controllers/admin/stats_controller.rb

@@ -48,7 +48,7 @@ module Admin
       if @events.count > 0
         start_date = @events.minimum('created_at').strftime('%Y-%m-%d')
         end_date = @events.maximum('created_at').strftime('%Y-%m-%d')
-        unless start_date == nil || end_date == nil
+        unless start_date.nil? || end_date.nil?
           @events_time = var_time(start_date, end_date, @events, 'created_at')
         end
       end
@@ -87,7 +87,7 @@ module Admin
               typelength += myevent.event_type.length
               @totallength += myevent.event_type.length
             end
-            if @eventstats[mytype.title] == nil
+            if @eventstats[mytype.title].nil?
               @eventstats[mytype.title] = { 'count' => events_mytype.count,
                                             'length' => events_mytype.count * mytype.length }
             end

app/controllers/admin/venue_controller.rb

@@ -19,5 +19,4 @@ class Admin::VenueController < ApplicationController
     @venue = @conference.venue
     render :venue_info
   end
-
 end