PLT-2687 sending email on upgrade and moving profile pic to new location (#2808)

* Fixing CLI and adding unit tests

* Adding the upgrade_db_30 to the help text

* Adding the upgrade_db_30 to the help text

* Adding the upgrade_db_30 to the help text

* Fixing CLI tests

* PLT-2687 sending email on upgrade and moving profile pic to new location

* Fixing img move

* Fixing moving of profile image

* making upgrade email localizable

* Fixing email template

templates/email_footer.html

@@ -1,9 +1,6 @@
 {{define "email_footer"}}
 
 <td style="text-align: center;color: #AAA; font-size: 11px; padding-bottom: 10px;">
-    <p style="margin: 25px 0;">
-        <img width="65" src="{{.Props.SiteURL}}/static/images/circles.png" alt="">
-    </p>
     <p style="padding: 0 50px;">
         (c) 2015 Mattermost, Inc. 855 El Camino Real, 13A-168, Palo Alto, CA, 94301.<br>
         {{.Props.Footer}}

templates/upgrade_30_body.html

@@ -0,0 +1,37 @@
+{{define "upgrade_30_body"}}
+
+<table align="center" border="0" cellpadding="0" cellspacing="0" width="100%" style="margin-top: 20px; line-height: 1.7; color: #555;">
+    <tr>
+        <td>
+            <table align="center" border="0" cellpadding="0" cellspacing="0" width="100%" style="max-width: 660px; font-family: Helvetica, Arial, sans-serif; font-size: 14px; background: #FFF;">
+                <tr>
+                    <td style="border: 1px solid #ddd;">
+                        <table align="center" border="0" cellpadding="0" cellspacing="0" width="100%" style="border-collapse: collapse;">
+                            <tr>
+                                <td>
+                                    <table border="0" cellpadding="0" cellspacing="0" style="padding: 20px 50px 0; margin: 0 auto">
+                                        <tr>
+                                            <td style="border-bottom: 1px solid #ddd; padding: 0 0 20px;">
+                                                {{ .Html.Info }}
+                                            </td>
+                                        </tr>
+                                        <tr>
+                                            {{template "email_info" . }}
+                                        </tr>
+                                    </table>
+                                </td>
+                            </tr>
+                            <tr>
+                                {{template "email_footer" . }}
+                            </tr>
+                        </table>
+                    </td>
+                </tr>
+            </table>
+        </td>
+    </tr>
+</table>
+
+{{end}}
+
+