switch to another email lib to support more AUTH types

deployment api completed (#11)

RESTful API for WireGuard Portal (#11)

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

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)

cleanup import statements

include tag version in travis builds

WIP: smaller docker image

version 1.0.6, show version in footer

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: 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.

add csrf

fix redirect after sending the peer email

fix user_edit template

migrate peer database

fix mail template (#3) and rename some variables, also change default ordering (latest handshake first)

WIP: support for multiple WireGuard devices (#2)

fix ldap provider, disable gin logs by default

fix ldap sync for disabled users, check if admin username is an email address, rename username to email

cleanup

WIP: new user management and authentication system, use go 1.16 embed