Code cleanup: Replace old hashes and remove trailing spaces

Created by: zzet

I'm use gem 'pre-commit' to keep my code clean. Sometimes, after editing the code, I get a diff line, which I have not edited, but they contain trailing spaces, empty EOF lines or old style hashes. This PR contains the code without them.

app/contexts/issues_bulk_update_context.rb

     assignee_id  = update_data[:assignee_id]
     status       = update_data[:status]
 
-    opts = {} 
+    opts = {}
     opts[:milestone_id] = milestone_id if milestone_id.present?
     opts[:assignee_id] = assignee_id if assignee_id.present?
     opts[:closed] = (status == "closed") if status.present?
     issues = Issue.where(id: issues_ids).all
     issues = issues.select { |issue| can?(current_user, :modify_issue, issue) }
     issues.each { |issue| issue.update_attributes(opts) }
-    { 
+    {
       count: issues.count,
       success: !issues.count.zero?
     }

app/models/milestone.rb

       if due_date.past?
         "expired at #{due_date.stamp("Aug 21, 2011")}"
       else
-        "expires at #{due_date.stamp("Aug 21, 2011")}"  
+        "expires at #{due_date.stamp("Aug 21, 2011")}"
       end
-    end  
+    end
   end
 
   def can_be_closed?

app/views/devise/confirmations/new.html.erb

 <h2>Resend confirmation instructions</h2>
 
-<%= form_for(resource, :as => resource_name, :url => confirmation_path(resource_name), :html => { :method => :post }) do |f| %>
+<%= form_for(resource, as: resource_name, url: confirmation_path(resource_name), html: { method: :post }) do |f| %>
   <%= devise_error_messages! %>
 
   <div><%= f.label :email %><br />
   <div><%= f.submit "Resend confirmation instructions" %></div>
 <% end %>
 
-<%= render :partial => "devise/shared/links" %>
+<%= render partial: "devise/shared/links" %>

app/views/devise/mailer/confirmation_instructions.html.erb

 
 <p>You can confirm your account through the link below:</p>
 
-<p><%= link_to 'Confirm my account', confirmation_url(@resource, :confirmation_token => @resource.confirmation_token) %></p>
+<p><%= link_to 'Confirm my account', confirmation_url(@resource, confirmation_token: @resource.confirmation_token) %></p>