Merge branch 'standalone_develop' into pm_project_develop

# Conflicts:
#	app/models/attachment.rb
#	app/views/api/v1/attachments/_simple_detail.json.jbuilder

app/models/project.rb

@@ -90,6 +90,8 @@ class Project < ApplicationRecord
   include ProjectOperable
   include Dcodes
 
+  default_scope {where.not(id: 0)}
+
   # common:开源托管项目
   # mirror:普通镜像项目，没有定时同步功能
   # sync_mirror:同步镜像项目，有系统定时同步功能，且用户可手动同步操作
@@ -137,6 +139,7 @@ class Project < ApplicationRecord
   has_many :project_topics, through: :project_topic_ralates
   has_many :commit_logs, dependent: :destroy
   has_many :daily_project_statistics, dependent: :destroy
+  has_one :project_dataset, dependent: :destroy
   after_create :incre_user_statistic, :incre_platform_statistic
   after_save :check_project_members
   before_save :set_invite_code, :reset_unmember_followed, :set_recommend_and_is_pinned, :reset_cache_data