Add and apply Style/RedundantParentheses rule

Parentheses make the code harder to read in these cases.

.rubocop.yml

@@ -493,6 +493,9 @@ Style/RedundantFreeze:
 Style/RedundantInterpolation:
   Enabled: true
 
+Style/RedundantParentheses:
+  Enabled: true
+
 Style/RedundantReturn:
   Enabled: true
 

app/controllers/legislation/processes_controller.rb

@@ -35,7 +35,7 @@ class Legislation::ProcessesController < Legislation::BaseController
     set_process
     @phase = :debate_phase
 
-    if @process.debate_phase.started? || (current_user&.administrator?)
+    if @process.debate_phase.started? || current_user&.administrator?
       render :debate
     else
       render :phase_not_open
@@ -123,7 +123,7 @@ class Legislation::ProcessesController < Legislation::BaseController
       @proposals = @proposals.send(@current_filter).page(params[:page])
     end
 
-    if @process.proposals_phase.started? || (current_user&.administrator?)
+    if @process.proposals_phase.started? || current_user&.administrator?
       legislation_proposal_votes(@proposals)
       render :proposals
     else

app/helpers/users_helper.rb

@@ -62,7 +62,7 @@ module UsersHelper
   def show_admin_menu?(user = nil)
     unless namespace == "officing"
       current_administrator? || current_moderator? || current_valuator? || current_manager? ||
-        (user&.administrator?) || current_poll_officer? || current_sdg_manager?
+        user&.administrator? || current_poll_officer? || current_sdg_manager?
     end
   end
 

app/models/concerns/measurable.rb

@@ -3,11 +3,11 @@ module Measurable
 
   class_methods do
     def title_max_length
-      @title_max_length ||= (columns.find { |c| c.name == "title" }&.limit) || 80
+      @title_max_length ||= columns.find { |c| c.name == "title" }&.limit || 80
     end
 
     def responsible_name_max_length
-      @responsible_name_max_length ||= (columns.find { |c| c.name == "responsible_name" }&.limit) || 60
+      @responsible_name_max_length ||= columns.find { |c| c.name == "responsible_name" }&.limit || 60
     end
 
     def question_max_length

app/views/legislation/processes/_help_gif.html.erb

@@ -16,7 +16,7 @@
           </p>
         <% end %>
 
-        <%= image_tag ("annotator_help.gif"), alt: t("annotator.help.alt") %>
+        <%= image_tag "annotator_help.gif", alt: t("annotator.help.alt") %>
       </div>
     </div>
   </div>

app/views/pages/help/_menu.html.erb

@@ -29,13 +29,11 @@
           class: "button hollow expanded"
         ] if feature?(:polls)
       ),
-      (
       [
         t("pages.help.menu.processes"),
         "#processes",
         class: "button hollow expanded"
-        ]
-      ),
+      ],
       [
         t("pages.help.menu.other"),
         "#other",