When render the investment list component with the link "see all
investments", now we redirect to groups index page when a budget has
multiple headings.
We were defining the same filters in three different controllers. We
were also adding a method in the ApplicationController which only made
sense in the same three controllers.
We were filtering by winners investments for finished budget without
having in consideration other filters.
We want the default filter to be `winners` for finished budgets.
