remove endpoint from peer in server-mode

fix .local DNS lookup (https://github.com/golang/go/issues/35067)

fix version display

WIP: smaller docker image, fix docker build

WIP: smaller docker image, sqlite needs cgo

WIP: smaller docker image

version 1.0.6, show version in footer

add configuration options and sample yaml to readme (#6)

fix duplicate configuration tag (#6)

fix client edit layout

Merge pull request #7 from h44z/interface_types ...

Interface types and more...

update dependencies

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.

update readme, fix default env file

fix TLS for email sending

make ldap cert check configurable, fix CodeQL warnings

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)