Extract calculate winners button to a component

This way we remove some duplication.

app/components/admin/budgets/calculate_winners_button_component.rb

@@ -0,0 +1,30 @@
+class Admin::Budgets::CalculateWinnersButtonComponent < ApplicationComponent
+  attr_reader :budget, :from_investments
+
+  def initialize(budget, from_investments: false)
+    @budget = budget
+    @from_investments = from_investments
+  end
+
+  private
+
+    def display_button?
+      budget.balloting_or_later?
+    end
+
+    def text
+      if budget.investments.winners.empty?
+        t("admin.budgets.winners.calculate")
+      else
+        t("admin.budgets.winners.recalculate")
+      end
+    end
+
+    def html_class
+      if from_investments
+        "button hollow float-right clear"
+      else
+        "button hollow"
+      end
+    end
+end