Add team block on admin Dashboard
remove Teams from stat on Admin Dashboard
receive_delayed_notifications in users contexts
Context refactoring step 1
Merge branch 'feature/update_contexts' into release/undev_v2.0.0

* feature/update_contexts:
  Context refactoring step 1

Conflicts:
	app/contexts/base_context.rb
	app/contexts/groups/remove_context.rb
	app/contexts/projects/remove_context.rb
	app/contexts/projects/teams/remove_relation_context.rb
	app/contexts/projects/transfer_context.rb
	app/contexts/search_context.rb
	app/contexts/teams/projects/create_relation_context.rb
	app/contexts/teams/projects/remove_relation_context.rb
	app/contexts/teams/projects/update_relation_context.rb
	app/contexts/teams/remove_context.rb
	app/contexts/teams/users/create_relation_context.rb
	app/contexts/teams/users/remove_relation_context.rb
	app/contexts/teams/users/update_relation_context.rb
	app/contexts/users/block_context.rb
	app/contexts/users/remove_context.rb
	app/controllers/admin/teams/projects_controller.rb
Merge branch 'feature/teams_block_in_admin' into release/undev_v2.0.0

* feature/teams_block_in_admin:
  remove Teams from stat on Admin Dashboard
  Add team block on admin Dashboard