[Web] Add quick toggle for imap/pop3/smtp access; small rework of buttons on /mailbox; Minor fixes and changes

data/web/lang/lang.en.json

@@ -616,6 +616,7 @@
         "alias_domain_alias_hint": "Aliases are <b>not</b> applied on domain aliases automatically. An alias address <code>my-alias@domain</code> <b>does not</b> cover the address <code>my-alias@alias-domain</code> (where \"alias-domain\" is an imaginary alias domain for \"domain\").<br>Please use a sieve filter to redirect mail to an external mailbox (see tab \"Filters\" or use  SOGo -> Forwarder).",
         "alias_domain_backupmx": "Alias domain inactive for relay domain",
         "aliases": "Aliases",
+        "allowed_protocols": "Allowed protocols",
         "backup_mx": "Relay domain",
         "bcc": "BCC",
         "bcc_destination": "BCC destination",