omit being redirected to new when providing new session types

- https://lab.allmende.io/degrowth/scriptorium/blob/0c20f85c8008900abd60372f640489978a6ea4e0/app/controllers/events_controller.rb#L249-257

app/controllers/events_controller.rb

 class EventsController < ApplicationController
   COLLECTION_ACTIONS = [:my, :my_coordinating, :my_reviewed, :with_review, :without_review, :undecided, :cards, :index, :feedbacks]
-  ALLOWED_EVENT_TYPE_SCOPES = %(all individual_papers special_sessions)
+  ALLOWED_EVENT_TYPE_SCOPES = %(all individual_papers special_sessions poster_presentations participatory_sessions)
   before_action :authenticate_user!
   before_action :not_submitter!
   before_action :set_is_reviewer

[Jon Richter]

Comment should go to https://lab.allmende.io/degrowth/scriptorium/blob/0c20f85c8008900abd60372f640489978a6ea4e0/app/controllers/events_controller.rb#L235-241