Made welcome emails more readable

Add paragraphing to email and password, and removed the irritating period that immediately followed the usage of [password] that was tripping up users who copied and pasted their passwords from the email.

packages/rocketchat-i18n/i18n/en.i18n.json

@@ -138,7 +138,7 @@
   "Accounts_ShowFormLogin": "Show Form-Based Login",
   "Accounts_UseDefaultBlockedDomainsList": "Use Default Blocked Domains List",
   "Accounts_UseDNSDomainCheck": "Use DNS Domain Check",
-  "Accounts_UserAddedEmail_Default": "<h2>Welcome to <h1>[Site_Name]</h1></h2><p>Go to [Site_URL] and try the best open source chat solution available today!</p><p>You may login using your email: [email] and password: [password]. You may be required to change it after your first login.",
+  "Accounts_UserAddedEmail_Default": "<h2>Welcome to <h1>[Site_Name]</h1></h2><p>Go to [Site_URL] and try the best open source chat solution available today!</p><p>You may login using the following information</p><p>Email: [email]</p><p>Password: [password]</p><p>You may be required to change it after your first login.</p>",
   "Accounts_UserAddedEmail_Description": "You may use the following placeholders: <br /><ul><li>[name], [fname], [lname] for the user's full name, first name or last name, respectively.</li><li>[email] for the user's email.</li><li>[password] for the user's password.</li><li>[Site_Name] and [Site_URL] for the Application Name and URL respectively.</li></ul>",
   "Accounts_UserAddedEmailSubject_Default": "You have been added to [Site_Name]",
   "Activate": "Activate",