[28294] Make news description actually optional

https://community.openproject.com/wp/28294

app/models/news.rb

@@ -34,7 +34,7 @@ class News < ActiveRecord::Base
     order('created_on')
   }, as: :commented, dependent: :delete_all
 
-  validates_presence_of :title, :description
+  validates_presence_of :title
   validates_length_of :title, maximum: 60
   validates_length_of :summary, maximum: 255
 
@@ -62,6 +62,10 @@ class News < ActiveRecord::Base
     !user.nil? && user.allowed_to?(:view_news, project)
   end
 
+  def description=(val)
+    super val.presence || ''
+  end
+
   # returns latest news for projects visible by user
   def self.latest(user: User.current, count: 5)
     latest_for(user, count: count)

app/views/news/_form.html.erb

@@ -39,7 +39,6 @@ See docs/COPYRIGHT.rdoc for more details.
 </div>
 <div class="form--field">
   <%= f.text_area :description,
-                  required: true,
                   class: 'wiki-edit wiki-toolbar',
                   container_class: '-wide',
                   with_text_formatting: true %>