Enable RSpec/RepeatedDescription cop & fix all issues

Read about cop at http://www.rubydoc.info/gems/rubocop-rspec/RuboCop/Cop/RSpec/RepeatedDescription

.rubocop.yml

@@ -156,3 +156,6 @@ RSpec/OverwritingSetup:
 
 RSpec/PredicateMatcher:
   Enabled: true
+
+RSpec/RepeatedDescription:
+  Enabled: true

spec/features/legislation/processes_spec.rb

@@ -26,7 +26,7 @@ feature 'Legislation' do
 
   context 'processes home page' do
 
-    scenario 'Processes can be listed' do
+    scenario 'No processes to be listed' do
       visit legislation_processes_path
       expect(page).to have_text "There aren't open processes"
 

spec/lib/migrate_spending_proposals_to_investments_spec.rb

@@ -31,7 +31,7 @@ describe MigrateSpendingProposalsToInvestments do
       expect(inv.heading.group.name).to eq("Toda la ciudad")
     end
 
-    it "Imports a city spending proposal" do
+    it "Imports a district spending proposal" do
       sp = create(:spending_proposal, geozone: create(:geozone, name: "Bel Air"))
 
       inv = importer.import(sp)

spec/models/proposal_spec.rb

@@ -108,7 +108,7 @@ describe Proposal do
       proposal.responsible_name = "12345678Z"
     end
 
-     it "is the document_number if level two user" do
+     it "is the document_number if level three user" do
       author = create(:user, :level_three, document_number: "12345678Z")
       proposal.author = author
       proposal.responsible_name = nil
@@ -854,7 +854,7 @@ describe Proposal do
       expect(archived.first).to eq(archived_proposal)
     end
 
-    it "scope archived" do
+    it "scope not archived" do
       not_archived = described_class.not_archived
 
       expect(not_archived.size).to eq(1)