create posteriors table (RM-1518)

Create posteriors tables
Add type to pft, defaulting to plant
Show pft_type  in pfts view

app/views/pfts/show.html.erb

@@ -30,6 +30,8 @@
 				<dd><%= @pft.name %></dd>
 				<dt>Definition</dt>
 				<dd><%= @pft.definition %></dd>
+				<dt>Type</dt>
+				<dd><%= @pft.pft_type %></dd>
 				<dt>Parent</dt>
 				<dd><%= link_to_if @pft.parent, @pft.parent, @pft.parent %></dd>
 				<dt>Clones</dt>

db/migrate/20140521180349_posteriors_tables_cleanup.rb

@@ -0,0 +1,52 @@
+class PosteriorsTablesCleanup < ActiveRecord::Migration
+  def self.up
+  	drop_table :posteriors_runs
+
+  	add_column :pfts, :pft_type, :string, default: "plant"
+  	Pft.update_all pft_type: "plant"
+
+    create_table :posterior_samples do |t|
+      t.integer  :posterior_id, :limit => 8
+      t.integer  :variable_id, :limit => 8
+      t.integer  :pft_id, :limit => 8
+      t.integer  :parent_id, :limit => 8
+  	  t.datetime :created_at
+  	  t.datetime :updated_at
+    end
+
+    create_table :projects do |t|
+      t.string   :name
+      t.string   :outdir
+      t.integer  :machine_id, :limit => 8
+      t.string   :description
+  	  t.datetime :created_at
+  	  t.datetime :updated_at
+    end
+
+    create_table :current_posteriors do |t|
+      t.integer  :pft_id, :limit => 8
+      t.integer  :variable_id, :limit => 8
+      t.integer  :posteriors_samples_id, :limit => 8
+      t.integer  :project_id, :limit => 8
+  	  t.datetime :created_at
+  	  t.datetime :updated_at
+    end
+  end
+
+  def self.down
+    create_table :posteriors_runs do |t|
+      t.integer  :posterior_id, :limit => 8
+      t.integer  :run_id, :limit => 8
+  	  t.datetime :created_at
+  	  t.datetime :updated_at
+    end
+
+  	remove_column :pfts, :pft_type
+
+	drop_table :posterior_samples
+
+	drop_table :projects
+
+	drop_table :current_posteriors
+  end
+end