switch to another email lib to support more AUTH types

deployment api completed (#11)

Set server name in TLS config (#13)

RESTful API for WireGuard Portal (#11)

WIP: RESTful API for WireGuard Portal, user endpoint (#11)

use lowercase email addresses for filtering (#14)

transform email addresses to lower case in ldap sync (#14)

convert all email addresses to lower case (#14)

add ssl/tls option for email encryption (#13)

configurable cert-check for the ldap auth provider (#12)

disable cert-check should also work for ldap via ssl (#12)

cleanup import statements

include tag version in travis builds

fix allowed ip's for peers in server-mode

remove endpoint from peer in server-mode

WIP: smaller docker image

version 1.0.6, show version in footer

fix duplicate configuration tag (#6)

simple database migration versioning, todo: implement migrations

more ui improvements, fix peer template for clients

improve client mode, todo: migrate peers (new db schema)

fix some bugs in client mode, improve login ui

support different interface types: client and server mode

WIP: support different interface types: improve placeholder values, allow bulk user creation for external email addresses

WIP: support different interface types: many fixes and improvements...

WIP: support different interface types: update config templates

WIP: support different interface types: server, client and custom. Show different UI for each type.

WIP: support different interface types: server, client and custom. Show different UI for each type.

fix TLS for email sending

make ldap cert check configurable, fix CodeQL warnings