FIX: Polls didn't work in imported posts

Imports skip validation of posts, but polls are only created during the validation phase.

app/models/post.rb

@@ -55,13 +55,13 @@ class Post < ActiveRecord::Base
 
   has_many :user_actions, foreign_key: :target_post_id
 
-  validates_with ::Validators::PostValidator
+  validates_with ::Validators::PostValidator, unless: :skip_validation
 
   after_save :index_search
   after_save :create_user_action
 
   # We can pass several creating options to a post via attributes
-  attr_accessor :image_sizes, :quoted_post_numbers, :no_bump, :invalidate_oneboxes, :cooking_options, :skip_unique_check
+  attr_accessor :image_sizes, :quoted_post_numbers, :no_bump, :invalidate_oneboxes, :cooking_options, :skip_unique_check, :skip_validation
 
   LARGE_IMAGES      ||= "large_images".freeze
   BROKEN_IMAGES     ||= "broken_images".freeze

lib/post_creator.rb

@@ -476,7 +476,8 @@ class PostCreator
 
   def save_post
     @post.disable_rate_limits! if skip_validations?
-    saved = @post.save(validate: !skip_validations?)
+    @post.skip_validation = skip_validations?
+    saved = @post.save
     rollback_from_errors!(@post) unless saved
   end