Apply Layout/LineLength rubocop rule

Note we're excluding a few files:

* Configuration files that weren't generated by us
* Migration files that weren't generated by us
* The Gemfile, since it includes an important comment that must be on
  the same line as the gem declaration
* The Budget::Stats class, since the heading statistics are a mess and
  having shorter lines would require a lot of refactoring

app/controllers/management/budgets/investments_controller.rb

@@ -37,7 +37,10 @@ class Management::Budgets::InvestmentsController < Management::BaseController
   end
 
   def print
-    @investments = @investments.apply_filters_and_search(@budget, params).order(cached_votes_up: :desc).for_render.limit(15)
+    @investments = @investments.apply_filters_and_search(@budget, params)
+                               .order(cached_votes_up: :desc)
+                               .for_render
+                               .limit(15)
   end
 
   private