Wrap hardcoded strings in t() and add missing translations

- Wrap all hardcoded UI strings in public views with t() calls:
  layouts, tracks, proposals, conference_registrations,
  physical_tickets, surveys, conferences splashpage partials
- Add missing en/es locale keys for all wrapped strings
- Fill empty Spanish translations in conferences/es.yml
- Fix markdown_hint helper to use I18n.t() for boilerplate text
- Use symbolic keys for strings with trailing periods to avoid
  YAML matching issues (room_capacity_*, tips_for_presentations,
  speakers_help)

Author: davidsf

app/helpers/format_helper.rb

@@ -196,7 +196,9 @@ def markdown(text, escape_html=true)
   end
 
   def markdown_hint(text='')
-    markdown("#{text} Please look at #{link_to '**Markdown Syntax**', 'https://daringfireball.net/projects/markdown/syntax', target: '_blank'} to format your text", false)
+    link = link_to('**Markdown Syntax**', 'https://daringfireball.net/projects/markdown/syntax', target: '_blank')
+    hint = "#{I18n.t('Please look at')} #{link} #{I18n.t('to format your text')}"
+    markdown(text.present? ? "#{text} #{hint}" : hint, false)
   end
 
   def quantity_left_of(resource)

app/views/conference_registrations/show.html.haml

@@ -57,7 +57,7 @@
           %span.fa-stack
             %i.fa-solid.fa-square-dashed.fa-stack-2x
             %i.fa-solid.fa-check.fa-stack-1x
-          Registered to the following event(s)
+          = t('Registered to the following event(s)')
         %ul
           - @registration.events.each do |event|
             %li
@@ -101,10 +101,10 @@
                   = humanized_money @total_price_per_ticket[ticket_id]
               %br
           .btn-group{ role: 'group' }
-            = link_to 'View all tickets',
+            = link_to t('View all tickets'),
               conference_physical_tickets_path(@conference.short_title),
               class: 'btn btn-success'
-            = link_to 'Get more tickets',
+            = link_to t('Get more tickets'),
               conference_tickets_path(@conference.short_title),
               class: 'btn btn-default'
         - else
@@ -115,7 +115,7 @@
             %p
               %em
                 = t("Your participation won't be valid without getting a")
-                registration ticket.
+                = t('registration ticket.')
           = link_to t('Get tickets'),
             conference_tickets_path(@conference.short_title),
             class: 'btn btn-default'
@@ -126,13 +126,13 @@
         .btn-group-vertical.pull-right
           = link_to t('Edit your Registration'), edit_conference_conference_registration_path(@conference.short_title), class: 'btn btn-success', disabled: @conference.end_date < Date.today
           - if @tickets.any?
-            = link_to 'Unregister', conference_conference_registration_path(@conference.short_title), method: :delete, class: 'btn btn-danger btn-xs',
+            = link_to t('Unregister'), conference_conference_registration_path(@conference.short_title), method: :delete, class: 'btn btn-danger btn-xs',
               data: { confirm: t("Your ticket purchases won't be refunded") }, disabled: @conference.end_date < Date.today
           - else
-            = link_to 'Unregister', conference_conference_registration_path(@conference.short_title), method: :delete, class: 'btn btn-danger btn-xs',
+            = link_to t('Unregister'), conference_conference_registration_path(@conference.short_title), method: :delete, class: 'btn btn-danger btn-xs',
               data: { confirm: t("You haven't purchased any ticket") }, disabled: @conference.end_date < Date.today
       - else
-        = link_to 'Register', new_conference_conference_registration_path(@conference.short_title), class: 'btn btn-success btn-lg pull-right'
+        = link_to t('Register'), new_conference_conference_registration_path(@conference.short_title), class: 'btn btn-success btn-lg pull-right'
 
   .row
     .col-md-12

app/views/conferences/_code_of_conduct.haml

@@ -16,6 +16,6 @@
           .modal-body
             = markdown organization.code_of_conduct
           .modal-footer
-            = link_to 'permalink',
+            = link_to t('permalink'),
               [:code_of_conduct, organization],
               target: '_blank'

app/views/conferences/_lodging.haml

@@ -1,6 +1,6 @@
 = content_for :splash_nav do
   %li
-    %a.smoothscroll{ href: '#lodging' } Lodging
+    %a.smoothscroll{ href: '#lodging' }= t('Lodging')
 
 - cache [venue, lodgings, '#splash#lodging'] do
   %section#lodging

app/views/conferences/_program.haml

@@ -1,6 +1,6 @@
 = content_for :splash_nav do
   %li
-    %a.smoothscroll{ href: '#program' } Program
+    %a.smoothscroll{ href: '#program' }= t('Program')
 
 - cache [conference, highlights, tracks, booths, '#splash#program'] do
   %section#program
@@ -30,7 +30,7 @@
             %p.cta-button.text-center
               = link_to(conference_schedule_path(conference.short_title),
                 class: 'btn btn-success btn-lg') do
-                Full Schedule
+                = t('Full Schedule')
 
 - unless booths.blank?
   - booths.each do |booth|

app/views/conferences/_sponsors.haml

@@ -1,6 +1,6 @@
 = content_for :splash_nav do
   %li
-    %a.smoothscroll{ href: '#sponsors' } Sponsors
+    %a.smoothscroll{ href: '#sponsors' }= t('Sponsors')
 
 - cache [conference, sponsors, sponsorship_levels, '#splash#sponsors'] do
   %section#sponsors

app/views/conferences/_tracks.haml

@@ -13,5 +13,5 @@
             - if track.start_date && track.end_date
               = date_string(track.start_date, track.end_date)
             - if track.room
-              In #{track.room.name}
+              = "#{t('in')} #{track.room.name}"
           = markdown truncate(track.description, length: 200, separator: ' ')

app/views/layouts/_messages.html.haml

@@ -4,9 +4,9 @@
       display: none;
     }
   %h2
-    JavaScript is not enabled
+    = t('JavaScript is not enabled')
   %p
-    Moraga requires JavaScript to be enabled to function. Please turn on JavaScript in your browser's settings and reload the page to continue.
+    = t('Moraga requires JavaScript to be enabled to function. Please turn on JavaScript in your browser\'s settings and reload the page to continue.')
 - flash.each do |type, message|
   .row
     .col-md-12

app/views/layouts/_user_menu.html.haml

@@ -4,7 +4,7 @@
     = t('Notifications')
     (#{unread_notifications(current_user).length})
   - if unread_notifications(current_user).length > 0
-    %li.dropdown-header Last 5 Comments for:
+    %li.dropdown-header= t('Last 5 Comments for')
     - unread_notifications(current_user).limit(5).group_by{ |comment| comment.commentable}.each do |event, comments|
       %li= link_to("#{event.title}(#{comments.count})", admin_conference_program_event_path(event.program.conference.short_title, event.id))
     %li.divider

app/views/physical_tickets/index.html.haml

@@ -14,7 +14,7 @@
         %table.table.table-bordered.table-striped.table-hover#roles
           %thead
             %tr
-              %th ID
+              %th= t('ID')
               %th
                 = t('Type')
               %th
@@ -45,6 +45,6 @@
     .col-md-12
       - if @unpaid_ticket_purchases.any?
         .h3
-          You have unpaid tickets!
+          = t('You have unpaid tickets!')
           %small
             = link_to t("Pay them here"), conference_ticket_purchases_path