Don't show "next steps" message with a stack trace

Usually, next steps are after the error message.
Here, we want the same options to be right above the stack trace,
so users are less likely to report duplicates.

locales/en-US.json

@@ -433,6 +433,8 @@
     "preferences_save_player_pos_label": "Save playback position: ",
     "crash_page_you_found_a_bug": "It looks like you found a bug in Invidious!",
     "crash_page_before_reporting": "Before reporting a bug, make sure that you have:",
+    "crash_page_refresh": "Tried to refresh the page",
+    "crash_page_switch_instance": "Tried to use another instance",
     "crash_page_read_the_faq": "looked at the <a href=\"`x`\">Frenquently Asked Queqtions (FAQ)</a>",
     "crash_page_search_issue": "searched for <a href=\"`x`\">existing issues on Github</a>",
     "crash_page_report_issue": "If none of the above helped, please <a href=\"`x`\">open a new issue on GitHub</a> (preferably in English) and include the following text in your message (do NOT translate that text):"

src/invidious/helpers/errors.cr

@@ -43,6 +43,8 @@ def error_template_helper(env : HTTP::Server::Context, locale : String?, status_
   url_faq = "https://github.com/iv-org/documentation/blob/master/FAQ.md"
   url_search_issues = "https://github.com/iv-org/invidious/issues"
 
+  url_switch = "https://redirect.invidious.io" + env.request.resource
+
   url_new_issue = "https://github.com/iv-org/invidious/issues/new"
   url_new_issue += "?labels=bug&template=bug_report.md&title="
   url_new_issue += URI.encode_www_form("[Bug] " + issue_title)
@@ -52,8 +54,10 @@ def error_template_helper(env : HTTP::Server::Context, locale : String?, status_
       <h2>#{translate(locale, "crash_page_you_found_a_bug")}</h2>
       <br/><br/>
 
-      <p>#{translate(locale, "crash_page_before_reporting")}</p>
+      <p><b>#{translate(locale, "crash_page_before_reporting")}</b></p>
       <ul>
+        <li><a href="#{env.request.resource}">#{translate(locale, "crash_page_refresh")}</a></li>
+        <li><a href="#{url_switch}">#{translate(locale, "crash_page_switch_instance")}</a></li>
         <li>#{translate(locale, "crash_page_read_the_faq", url_faq)}</li>
         <li>#{translate(locale, "crash_page_search_issue", url_search_issues)}</li>
       </ul>
@@ -66,7 +70,9 @@ def error_template_helper(env : HTTP::Server::Context, locale : String?, status_
     </div>
   END_HTML
 
-  next_steps = error_redirect_helper(env, locale)
+  # Don't show the usual "next steps" widget. The same options are
+  # proposed above the error message, just worded differently.
+  next_steps = ""
 
   return templated "error"
 end