Tweak timezone check and minor style tweaks

app/helpers/application_helper.rb

@@ -189,8 +189,8 @@ module ApplicationHelper
   end
 
   # TODO:Snap!Con: Replace this with a search for a conference logo.
-  def nav_root_link_for(conference)
-    path = conference.try(:name) ? conference_path(conference) : root_path
+  def nav_root_link_for(conference = nil)
+    path = !conference.nil? ? conference_path(conference) : root_path
     link_to(
       image_tag('snapcon_logo.png'),
       path,

app/helpers/conference_helper.rb

@@ -24,6 +24,6 @@ module ConferenceHelper
 
   def short_ticket_description(ticket)
     return unless ticket.description
-    markdown(ticket.description&.split("\n").first&.strip)
+    markdown(ticket.description.split("\n").first&.strip)
   end
 end

app/models/conference.rb

@@ -700,7 +700,7 @@ class Conference < ApplicationRecord
 
   # Returns the current day if it is a day of the schedule or nil otherwise
   def current_conference_day
-    day = Time.find_zone(timezone).today
+    day = Time.now.in_time_zone(timezone).today
     day if (start_date..end_date).cover? day
   end