Updated .env.template with missing config values.

Several values were missing from the .env.template file.
Updated this with all the values which were missing.

.env.template

@@ -103,7 +103,7 @@
 # ICON_BLACKLIST_REGEX=192\.168\.1\.[0-9].*^
 
 ## Any IP which is not defined as a global IP will be blacklisted.
-## Usefull to secure your internal environment: See https://en.wikipedia.org/wiki/Reserved_IP_addresses for a list of IPs which it will block
+## Useful to secure your internal environment: See https://en.wikipedia.org/wiki/Reserved_IP_addresses for a list of IPs which it will block
 # ICON_BLACKLIST_NON_GLOBAL_IPS=true
 
 ## Disable 2FA remember
@@ -111,6 +111,18 @@
 ## Note that the checkbox would still be present, but ignored.
 # DISABLE_2FA_REMEMBER=false
 
+## Maximum attempts before an email token is reset and a new email will need to be sent.
+# EMAIL_ATTEMPTS_LIMIT=3
+
+## Token expiration time
+## Maximum time in seconds a token is valid. The time the user has to open email client and copy token.
+# EMAIL_EXPIRATION_TIME=600
+
+## Email token size
+## Number of digits in an email token (min: 6, max: 19).
+## Note that the Bitwarden clients are hardcoded to mention 6 digit codes regardless of this setting!
+# EMAIL_TOKEN_SIZE=6
+
 ## Controls if new users can register
 # SIGNUPS_ALLOWED=true
 
@@ -151,6 +163,16 @@
 
 ## Invitations org admins to invite users, even when signups are disabled
 # INVITATIONS_ALLOWED=true
+## Name shown in the invitation emails that don't come from a specific organization
+# INVITATION_ORG_NAME=Bitwarden_RS
+
+## Per-organization attachment limit (KB)
+## Limit in kilobytes for an organization attachments, once the limit is exceeded it won't be possible to upload more
+# ORG_ATTACHMENT_LIMIT=
+## Per-user attachment limit (KB).
+## Limit in kilobytes for a users attachments, once the limit is exceeded it won't be possible to upload more
+# USER_ATTACHMENT_LIMIT=
+
 
 ## Controls the PBBKDF password iterations to apply on the server
 ## The change only applies when the password is changed
@@ -166,6 +188,13 @@
 ## For U2F to work, the server must use HTTPS, you can use Let's Encrypt for free certs
 # DOMAIN=https://bw.domain.tld:8443
 
+## Allowed iframe ancestors (Know the risks!)
+## https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/frame-ancestors
+## Allows other domains to embed the web vault into an iframe, useful for embedding into secure intranets
+## This adds the configured value to the 'Content-Security-Policy' headers 'frame-ancestors' value.
+## Multiple values must be separated with a whitespace.
+# ALLOWED_IFRAME_ANCESTORS=
+
 ## Yubico (Yubikey) Settings
 ## Set your Client ID and Secret Key for Yubikey OTP
 ## You can generate it here: https://upgrade.yubico.com/getapikey/
@@ -214,10 +243,24 @@
 # SMTP_EXPLICIT_TLS=true # (Implicit) - N.B. This variable configures Implicit TLS. It's currently mislabelled (see bug #851) - SMTP_SSL Needs to be set to true for this option to work.
 # SMTP_USERNAME=username
 # SMTP_PASSWORD=password
+# SMTP_TIMEOUT=15
+
 ## Defaults for SSL is "Plain" and "Login" and nothing for Non-SSL connections.
 ## Possible values: ["Plain", "Login", "Xoauth2"].
 ## Multiple options need to be separated by a comma ','.
 # SMTP_AUTH_MECHANISM="Plain"
-# SMTP_TIMEOUT=15
+
+## Server name sent during the SMTP HELO
+## By default this value should be is on the machine's hostname,
+## but might need to be changed in case it trips some anti-spam filters
+# HELO_NAME=
+
+## Require new device emails. When a user logs in an email is required to be sent.
+## If sending the email fails the login attempt will fail!!
+# REQUIRE_DEVICE_EMAIL=false
+
+## HIBP Api Key
+## HaveIBeenPwned API Key, request it here: https://haveibeenpwned.com/API/Key
+# HIBP_API_KEY=
 
 # vim: syntax=ini