Explicitly disable JS with other file formats

JavaScripts drivers emulate browser behavior and browsers might download
these files instead of opening them.

spec/system/admin/budget_investments_spec.rb

@@ -1692,7 +1692,7 @@ describe "Admin budget investments", :admin do
     end
   end
 
-  context "Selecting csv" do
+  context "Selecting csv", :no_js do
     scenario "Downloading CSV file" do
       admin = create(:administrator, user: create(:user, username: "Admin"))
       valuator = create(:valuator, user: create(:user, username: "Valuator"))

spec/system/admin/emails/emails_download_spec.rb

@@ -22,7 +22,7 @@ describe "Admin download user emails" do
       admin_without_email.update_column(:email, nil)
     end
 
-    scenario "returns the selected users segment csv file" do
+    scenario "returns the selected users segment csv file", :no_js do
       visit admin_emails_download_index_path
 
       within("#admin_download_emails") do

spec/system/legislation/summary_spec.rb

@@ -165,7 +165,7 @@ describe "Legislation" do
       expect(page).to have_link "Comment 3"
     end
 
-    scenario "excel download" do
+    scenario "excel download", :no_js do
       visit summary_legislation_process_path(process)
       click_link "Download summary"