Fixes #voodoorai2000 comments

Fixes some comments from #voodoorai2000 for the PR to consul

app/controllers/dashboard/supports_controller.rb

@@ -0,0 +1,43 @@
+class Dashboard::SupportsController < Dashboard::BaseController
+  include Dashboard::ExpectsDateRange
+
+  def index
+    authorize! :dashboard, proposal
+    render json: accumulated_supports
+  end
+
+  private
+
+  def accumulated_supports
+    grouped_votes = grouped_supports
+    grouped_votes.each do |group, votes|
+      grouped_votes[group] = votes.inject(0) { |sum, vote| sum + vote.vote_weight }
+    end
+
+    accumulated = 0
+    grouped_votes.each do |k, v|
+      accumulated += v
+      grouped_votes[k] = accumulated
+    end
+
+    grouped_votes
+  end
+
+  def grouped_supports
+    if params[:group_by] == 'week'
+      return supports.group_by { |v| "#{v.created_at.to_date.cweek}/#{v.created_at.to_date.year}" }
+    end
+
+    if params[:group_by] == 'month'
+      return supports.group_by { |v| "#{v.created_at.to_date.year}-#{v.created_at.to_date.month}" }
+    end
+
+    supports.group_by { |v| v.created_at.to_date }
+  end
+
+  def supports
+    @supports ||= Vote
+                    .where(votable: proposal, created_at: start_date.beginning_of_day..end_date.end_of_day)
+                    .order(created_at: :asc)
+  end
+end