New UI changes(tags, categories, authorisations, module index…)

To run:
  - ruby lib/remove_old_tags.rb DB_NAME
  - rake new_ui:migrate_tags
  - rake new_ui:migrate_categories['APP_KEY,''MODEL_NAME'] (check new_ui.rake for more details)

lib/orbit_category/categorizable.rb

@@ -0,0 +1,41 @@
+module OrbitCategory
+  module Categorizable
+
+    def self.included(base)
+      base.extend ClassMethods
+      base.class_eval 'categorizable'
+    end
+
+    module ClassMethods
+
+      def categorizable
+        class_eval do
+          field :category_id, type: BSON::ObjectId
+          has_one :buffer_category, as: :categorizable, autosave: true, dependent: :destroy
+          accepts_nested_attributes_for :buffer_category, allow_destroy: true
+        end
+        send :include, InstanceMethods
+      end
+    end
+
+    module InstanceMethods
+
+      def remove_id(id)
+        self.update_attribute(:category_id, id)
+      end
+
+      def category
+        self.buffer_category.category if self.buffer_category
+      end
+
+      def category=(id)
+        self.buffer_category.destroy if self.buffer_category
+        self.build_buffer_category(category_id: id)
+        self.category_id = id
+      end
+
+    end
+
+  end
+
+end

lib/orbit_category/categorizing.rb

@@ -0,0 +1,27 @@
+module OrbitCategory
+  module Categorizing
+
+    def get_categories_for_index
+      if is_manager? || is_admin?
+        @module_app.categories.all
+      else
+        @module_app.categories.enabled
+      end
+    end
+
+    def get_categories_for_form(func_authed_for_sub_manager = "submit_#{@module_app.key}")
+      categories = if is_manager? || is_admin?
+        @module_app.categories.enabled
+      elsif is_sub_manager?
+        @module_app.categories.enabled.authed_for_user(current_user, func_authed_for_sub_manager)
+      end
+      if categories.empty?
+        flash[:alert] = t(:no_category)
+        redirect_to :action => :index
+      end
+      categories
+    end
+
+  end
+
+end