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/views/documents/_form.rhtml

@@ -2,7 +2,7 @@
 <div class="box">
 <!--[form:document]-->
 <p><label for="document_category_id"><%=l(:field_category)%></label>
-<%= select('document', 'category_id', Enumeration.document_categories.collect {|c| [c.name, c.id]}) %></p>
+<%= select('document', 'category_id', DocumentCategory.all.collect {|c| [c.name, c.id]}) %></p>
 
 <p><label for="document_title"><%=l(:field_title)%> <span class="required">*</span></label>
 <%= text_field 'document', 'title', :size => 60 %></p>

app/views/enumerations/_form.rhtml

@@ -1,7 +1,7 @@
 <%= error_messages_for 'enumeration' %>
 <div class="box">
 <!--[form:optvalue]-->
-<%= hidden_field 'enumeration', 'opt'  %>
+<%= hidden_field 'enumeration', 'type'  %>
 
 <p><label for="enumeration_name"><%=l(:field_name)%></label>
 <%= text_field 'enumeration', 'name'  %></p>

app/views/enumerations/list.rhtml

@@ -1,9 +1,9 @@
 <h2><%=l(:label_enumerations)%></h2>
 
-<% Enumeration::OPTIONS.each do |option, params| %>
-<h3><%= l(params[:label]) %></h3>
+<% Enumeration.get_subclasses.each do |klass| %>
+<h3><%= l(klass::OptionName) %></h3>
 
-<% enumerations = Enumeration.values(option) %>
+<% enumerations = klass.all %>
 <% if enumerations.any? %>
 <table class="list">
 <% enumerations.each do |enumeration| %>
@@ -20,7 +20,7 @@
 <% reset_cycle %>
 <% end %>
 
-<p><%= link_to l(:label_enumeration_new), { :action => 'new', :opt => option } %></p>
+<p><%= link_to l(:label_enumeration_new), { :action => 'new', :type => klass.name } %></p>
 <% end %>
 
 <% html_title(l(:label_enumerations)) -%>

app/views/issues/bulk_edit.rhtml

@@ -13,7 +13,7 @@
 <%= select_tag('status_id', "<option value=\"\">#{l(:label_no_change_option)}</option>" + options_from_collection_for_select(@available_statuses, :id, :name)) %></label>
 <% end %>
 <label><%= l(:field_priority) %>: 
-<%= select_tag('priority_id', "<option value=\"\">#{l(:label_no_change_option)}</option>" + options_from_collection_for_select(Enumeration.priorities, :id, :name)) %></label>
+<%= select_tag('priority_id', "<option value=\"\">#{l(:label_no_change_option)}</option>" + options_from_collection_for_select(IssuePriority.all, :id, :name)) %></label>
 <label><%= l(:field_category) %>: 
 <%= select_tag('category_id', content_tag('option', l(:label_no_change_option), :value => '') +
                                 content_tag('option', l(:label_none), :value => 'none') +

app/views/my/blocks/_issuesassignedtome.rhtml

@@ -4,7 +4,7 @@
                                 :conditions => {:assigned_to_id => User.current.id},
                                 :limit => 10, 
                                 :include => [ :status, :project, :tracker, :priority ], 
-                                :order => "#{Enumeration.table_name}.position DESC, #{Issue.table_name}.updated_on DESC") %>
+                                :order => "#{IssuePriority.table_name}.position DESC, #{Issue.table_name}.updated_on DESC") %>
 <%= render :partial => 'issues/list_simple', :locals => { :issues => assigned_issues } %>
 <% if assigned_issues.length > 0 %>
 <p class="small"><%= link_to l(:label_issue_view_all), :controller => 'issues',