Changed Enumerations to use a Single Table Inheritance

* Added migrations to change Enumerations to an STI relationship
* Added TimeEntryActivity model (STI)
* Added DocumentCategory model (STI)
* Added IssuePriority model (STI)
* Added Enumeration#get_subclasses to get a list of the subclasses of Enumeration
* Changed Enumeration to use the STI type field instead of the opt field
* Changed Enumeration#opt to return the old opt values but with a deprecation warning.
* Removed Enumeration::OPTIONS
* Removed the dynamic named_scopes in favor of specific named_scopes.  Kept for
  compatibility reasons.
* Added Enumeration#default so each subclass can easily find it's default record.
* Fixed Enumeration#default to use the STI scoping with a fake default scope for finding Enumeration's default.
* Added a 'all' named scope for getting all records in order by position.
* Added Deprecation warnings to the old named_scopes in Enumerations.
* Moved various methods off of Enumeration and onto the concrete classes
* Changed the EnumerationsController to use types
* Updated the Enumeration list template
* Added has_many relationships to the Enumeration STI classes.
* Fixes for tests.

  #3007

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2777 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/issues_controller.rb

@@ -113,7 +113,7 @@ class IssuesController < ApplicationController
     @changesets.reverse! if User.current.wants_comments_in_reverse_order?
     @allowed_statuses = @issue.new_statuses_allowed_to(User.current)
     @edit_allowed = User.current.allowed_to?(:edit_issues, @project)
-    @priorities = Enumeration.priorities
+    @priorities = IssuePriority.all
     @time_entry = TimeEntry.new
     respond_to do |format|
       format.html { render :template => 'issues/show.rhtml' }
@@ -163,7 +163,7 @@ class IssuesController < ApplicationController
         return
       end		
     end	
-    @priorities = Enumeration.priorities
+    @priorities = IssuePriority.all
     render :layout => !request.xhr?
   end
   
@@ -173,7 +173,7 @@ class IssuesController < ApplicationController
   
   def edit
     @allowed_statuses = @issue.new_statuses_allowed_to(User.current)
-    @priorities = Enumeration.priorities
+    @priorities = IssuePriority.all
     @edit_allowed = User.current.allowed_to?(:edit_issues, @project)
     @time_entry = TimeEntry.new
     
@@ -237,7 +237,7 @@ class IssuesController < ApplicationController
   def bulk_edit
     if request.post?
       status = params[:status_id].blank? ? nil : IssueStatus.find_by_id(params[:status_id])
-      priority = params[:priority_id].blank? ? nil : Enumeration.find_by_id(params[:priority_id])
+      priority = params[:priority_id].blank? ? nil : IssuePriority.find_by_id(params[:priority_id])
       assigned_to = (params[:assigned_to_id].blank? || params[:assigned_to_id] == 'none') ? nil : User.find_by_id(params[:assigned_to_id])
       category = (params[:category_id].blank? || params[:category_id] == 'none') ? nil : @project.issue_categories.find_by_id(params[:category_id])
       fixed_version = (params[:fixed_version_id].blank? || params[:fixed_version_id] == 'none') ? nil : @project.versions.find_by_id(params[:fixed_version_id])
@@ -415,7 +415,7 @@ class IssuesController < ApplicationController
       @assignables << @issue.assigned_to if @issue && @issue.assigned_to && !@assignables.include?(@issue.assigned_to)
     end
     
-    @priorities = Enumeration.priorities.reverse
+    @priorities = IssuePriority.all.reverse
     @statuses = IssueStatus.find(:all, :order => 'position')
     @back = request.env['HTTP_REFERER']