Reduce number of requests in dashboard tests

Using separate tests to check every link on the page made the tests
slower. We were also adding a useless initial request on tests which
started by visiting a different URL.

This useless initial request meant in some tests the browser was started
before using factories to create data. Accessing the database in the
test after the browser starts might cause concurrency issues in
JavaScript tests.

spec/system/dashboard/dashboard_spec.rb

@@ -1,31 +1,25 @@
 require "rails_helper"
 
 describe "Proposal's dashboard" do
-  let!(:proposal) { create(:proposal, :draft) }
+  let(:proposal) { create(:proposal, :draft) }
+  before { login_as(proposal.author) }
 
-  before do
-    login_as(proposal.author)
+  scenario "Navigation" do
     visit proposal_dashboard_path(proposal)
-  end
 
-  scenario "Dashboard has a link to my proposal" do
     expect(page).to have_link("Edit my proposal")
-  end
-
-  scenario "My proposal has a link to edit the proposal" do
     expect(page).to have_link("Edit proposal")
-  end
-
-  scenario "My proposal has a link to retire the proposal" do
     expect(page).to have_link("Retire proposal")
-  end
-
-  scenario "My proposal has a link to publish the proposal" do
     expect(page).to have_link("Publish proposal")
+    expect(page).to have_link("Polls")
+    expect(page).to have_link("E-mail")
+    expect(page).to have_link("Poster")
   end
 
   scenario "Publish link dissapears after proposal's publication" do
+    visit proposal_dashboard_path(proposal)
     click_link "Publish proposal"
+
     expect(page).not_to have_link("Publish proposal")
   end
 
@@ -261,18 +255,6 @@ describe "Proposal's dashboard" do
     end
   end
 
-  scenario "Dashboard has a link to polls feature" do
-    expect(page).to have_link("Polls")
-  end
-
-  scenario "Dashboard has a link to e-mail feature" do
-    expect(page).to have_link("E-mail")
-  end
-
-  scenario "Dashboard has a link to poster feature" do
-    expect(page).to have_link("Poster")
-  end
-
   scenario "Dashboard has a link to resources on main menu" do
     feature = create(:dashboard_action, :resource, :active)
 
@@ -342,7 +324,8 @@ describe "Proposal's dashboard" do
   end
 
   scenario "Dashboard has a link to dashboard community", js: true do
-    expect(page).to have_link("Community")
+    visit proposal_dashboard_path(proposal)
+
     click_link "Community"
 
     expect(page).to have_content("Participants")
@@ -364,6 +347,8 @@ describe "Proposal's dashboard" do
   end
 
   scenario "Dashboard has a link to messages" do
+    visit proposal_dashboard_path(proposal)
+
     expect(page).to have_link("Message to users")
 
     within("#side_menu") do
@@ -404,6 +389,8 @@ describe "Proposal's dashboard" do
     create(:related_content, parent_relationable: proposal,
                              child_relationable: related_proposal, author: build(:user))
 
+    visit proposal_dashboard_path(proposal)
+
     within("#side_menu") do
       click_link "Related content"
     end
@@ -497,7 +484,8 @@ describe "Proposal's dashboard" do
 
   describe "detect_new_actions_after_last_login" do
     before do
-      proposal.author.update(last_sign_in_at: Date.yesterday)
+      visit proposal_dashboard_path(proposal)
+      proposal.author.update!(last_sign_in_at: Date.yesterday)
     end
 
     scenario "Display tag 'new' on resouce when it is new for author since last login" do