Update PR with master

Rebase master branch so that this PR can
be updated with the latest changes.
Conflicts has been solved and some specs
updated to fit the new changes. dev_seeds
has been also adapted to the new format.

db/dev_seeds/budgets.rb

@@ -56,6 +56,12 @@ section "Creating Investments" do
   end
 end
 
+section "Marking investments as visible to valuators" do
+  (1..50).to_a.sample.times do
+    Budget::Investment.reorder("RANDOM()").first.update(visible_to_valuators: true)
+  end
+end
+
 section "Geolocating Investments" do
   Budget.all.each do |budget|
     budget.investments.each do |investment|