Correct mail templates to show 'You've been invited to [teamname] team' rather than you've been invited when signing up

api/templates/verify_body.html

@@ -17,7 +17,7 @@
                                     <table border="0" cellpadding="0" cellspacing="0" style="padding: 20px 50px 0; text-align: center; margin: 0 auto">
                                         <tr>
                                             <td style="border-bottom: 1px solid #ddd; padding: 0 0 20px;">
-                                                <h2 style="font-weight: normal; margin-top: 10px;">You've been invited</h2>
+                                                <h2 style="font-weight: normal; margin-top: 10px;">You've joined the {{ .Props.TeamDisplayName }} team</h2>
                                                 <p>Please verify your email address by clicking below.</p>
                                                 <p style="margin: 20px 0 15px">
                                                     <a href="{{.Props.VerifyUrl}}" style="background: #2389D7; border-radius: 3px; color: #fff; border: none; outline: none; min-width: 200px; padding: 15px 25px; font-size: 14px; font-family: inherit; cursor: pointer; -webkit-appearance: none;text-decoration: none;">Verify Email</a>

api/templates/welcome_body.html

@@ -18,7 +18,7 @@
                                         {{if .Props.VerifyUrl }}
                                         <tr>
                                             <td style="border-bottom: 1px solid #ddd; padding: 0 0 20px;">
-                                                <h2 style="font-weight: normal; margin-top: 10px;">You've been invited</h2>
+                                                <h2 style="font-weight: normal; margin-top: 10px;">You've joined the {{ .Props.TeamDisplayName }} team</h2>
                                                 <p>Please verify your email address by clicking below.</p>
                                                 <p style="margin: 20px 0 15px">
                                                     <a href="{{.Props.VerifyUrl}}" style="background: #2389D7; border-radius: 3px; color: #fff; border: none; outline: none; min-width: 200px; padding: 15px 25px; font-size: 14px; font-family: inherit; cursor: pointer; -webkit-appearance: none;text-decoration: none;">Verify Email</a>