Improved configuration and documented options. Implemented option to disable web vault and to disable the use of bitwarden's official icon servers

.env

@@ -1,13 +1,34 @@
+## Bitwarden_RS Configuration File
+## Uncomment any of the following lines to change the defaults
+
+## Main data folder
+# DATA_FOLDER=data
+
+## Individual folders, these override %DATA_FOLDER%
 # DATABASE_URL=data/db.sqlite3
-# PRIVATE_RSA_KEY=data/private_rsa_key.der
-# PUBLIC_RSA_KEY=data/public_rsa_key.der
+# RSA_KEY_FILENAME=data/rsa_key
 # ICON_CACHE_FOLDER=data/icon_cache
 # ATTACHMENTS_FOLDER=data/attachments
 
-# true for yes, anything else for no
-SIGNUPS_ALLOWED=true
+## Web vault settings
+# WEB_VAULT_FOLDER=web-vault/
+# WEB_VAULT_ENABLED=true
 
-# ROCKET_ENV=production
+## Controls if new users can register
+# SIGNUPS_ALLOWED=true
+
+## Use a local favicon extractor
+## Set to false to use bitwarden's official icon servers
+## Set to true to use the local version, which is not as smart,
+##   but it doesn't send the cipher domains to bitwarden's servers
+# LOCAL_ICON_EXTRACTOR=false
+
+## Controls the PBBKDF password iterations to apply on the server
+## The change only applies when the password is changed
+# PASSWORD_ITERATIONS=100000
+
+## Rocket specific settings, check Rocket documentation to learn more
+# ROCKET_ENV=staging
 # ROCKET_ADDRESS=0.0.0.0 # Enable this to test mobile app
 # ROCKET_PORT=8000
 # ROCKET_TLS={certs="/path/to/certs.pem",key="/path/to/key.pem"}