changing the wording, and making sure we add specific simple SPAN tags to better test our code

Author: Guillim

app/authentification/templates/email_not_set.html

@@ -3,7 +3,7 @@
 {% block content_auth %}
 <div class="card-content">
   <p>
-    The webmaster hasn't set up any emails yet, so we can't send you any link confirmation
+    The webmaster <span>has not set up any emails</span> yet, so we can't send you any link confirmation
   </p>
   <p>
     Please contact the admin to learn more

app/authentification/templates/password_reset_done.html

@@ -3,7 +3,7 @@
 {% block content_auth %}
 <div class="card-content">
   <p>
-    We've emailed you instructions for setting your password, if an account exists with the email you entered.
+    We've emailed you instructions for re-setting your password, if an account exists with the email you entered.
     You should receive them shortly.
   </p>
   <p>

app/authentification/templates/validate_mail_address_complete.html

@@ -3,7 +3,7 @@
 {% block content_auth %}
 <div class="card-content">
   <p>
-    We've emailed you instructions for setting your password, if an account exists with the email you entered.
+    We've <span>emailed you instructions to activate your account</span>.
     You should receive them shortly.
   </p>
   <p>