[IMP] survey: rename 'Survey' to 'Certification' when relevant

Purpose
=======

This commit reworks some views to rename 'Survey' to 'Certification'
for a better visual integration of the new certification flow.

addons/survey/data/mail_template_data.xml

@@ -9,11 +9,19 @@
 <div style="margin: 0px; padding: 0px; font-size: 13px;">
     <p style="margin: 0px; padding: 0px; font-size: 13px;">
         Dear ${object.partner_id.name or 'participant'}<br/><br/>
-        We are conducting a survey and your response would be appreciated.
+        % if object.survey_id.certificate:
+            You have been invited to take a new certification.
+        % else:
+            We are conducting a survey and your response would be appreciated.
+        % endif
         <div style="margin: 16px 0px 16px 0px;">
             <a href="${('%s?answer_token=%s' % (object.survey_id.public_url, object.token)) | safe}"
                 style="background-color: #875A7B; padding: 8px 16px 8px 16px; text-decoration: none; color: #fff; border-radius: 5px; font-size:13px;">
-                Start Survey
+                % if object.survey_id.certificate:
+                    Start Certification
+                % else:
+                    Start Survey
+                % endif
             </a>
         </div>
         % if object.deadline:

addons/survey/static/src/js/tour_test_certification_failure.js

@@ -9,8 +9,8 @@ odoo.define('survey.tour_test_certification_failure', function (require) {
 var tour = require('web_tour.tour');
 
 var failSteps = [{ // Page-1
-    content: "Clicking on Start Survey",
-    trigger: 'a.btn.btn-primary.btn-lg:contains("Start Survey")',
+    content: "Clicking on Start Certification",
+    trigger: 'a.btn.btn-primary.btn-lg:contains("Start Certification")',
 }, { // Question: Do we sell Acoustic Bloc Screens?
     content: "Selecting answer 'No'",
     trigger: 'div.js_question-wrapper:contains("Do we sell Acoustic Bloc Screens") select',

addons/survey/static/src/js/tour_test_certification_success.js

@@ -8,8 +8,8 @@ tour.register('test_certification_success', {
     url: '/survey/start/4ead4bc8-b8f2-4760-a682-1fde8ddb95ac'
 },
 [{ // Page-1
-        content: "Clicking on Start Survey",
-        trigger: 'a.btn.btn-primary.btn-lg:contains("Start Survey")',
+        content: "Clicking on Start Certification",
+        trigger: 'a.btn.btn-primary.btn-lg:contains("Start Certification")',
     }, { // Question: Do we sell Acoustic Bloc Screens?
         content: "Selecting answer 'Yes'",
         trigger: 'div.js_question-wrapper:contains("Do we sell Acoustic Bloc Screens") select',

addons/survey/views/survey_templates.xml

@@ -178,7 +178,12 @@
                             </p>
                         </div>
                         <a role="button" class="btn btn-primary btn-lg" t-att-href="'/survey/fill/%s/%s' % (survey.access_token, answer.token)">
-                            Start Survey
+                            <t t-if="survey.certificate">
+                                Start Certification
+                            </t>
+                            <t t-else="">
+                                Start Survey
+                            </t>
                         </a>
                     </div>
                 </div>