Merge branch 'atomaka/feature/useful-things' into 'master'

Skill Useful Fixes

* Add default sort order to the Leader Skill page
* Remove passive skill name requirement.

See merge request !19

app/models/leader_skill.rb

@@ -3,4 +3,6 @@ class LeaderSkill < ActiveRecord::Base
 
   validates :description, presence: true,
                           uniqueness: { case_sensitive: false }
+
+  default_scope { order(:description) }
 end

app/models/passive_skill.rb

@@ -1,13 +1,16 @@
 class PassiveSkill < ActiveRecord::Base
   has_paper_trail
 
-  validates :name, presence: true
   validates :description, presence: true,
                           uniqueness: { scope: :name }
 
   default_scope { order(:name) }
 
   def full
-    "#{name} - #{description}"
+    "#{display_name} - #{description}"
+  end
+
+  def display_name
+    name.present? ? name : 'UNNAMED'
   end
 end