smtp + email confirmation (#285)

* add smtp configuration

* add email confirm + reset templates

* add email sender to testrig

* flesh out the email sender interface

* go fmt

* golint

* update from field with more clarity

* tidy up the email formatting

* fix tests

* add email sender to processor

* tidy client api processing a bit

* further tidying in fromClientAPI

* pin new account to user

* send msg to processor on new account creation

* generate confirm email uri

* remove emailer from account processor again

* add processCreateAccountFromClientAPI

* move emailer accountprocessor => userprocessor

* add email sender to user processor

* SendConfirmEmail function

* add noop email sender

* use noop email sender in tests

* only assemble message if callback is not nil

* use noop email sender if no smtp host is defined

* minify email html before sending

* fix wrong email address

* email confirm test

* fmt

* serve web hndler

* add email confirm handler

* init test log properly on testrig

* log emails that *would* have been sent

* go fmt ./...

* unexport confirm email handler

* updatedAt

* test confirm email function

* don't allow tokens older than 7 days

* change error message a bit

* add basic smtp docs

* add a few more snippets

* typo

* add email sender to outbox tests

* don't use dutch wikipedia link

* don't minify email html

internal/db/bundb/admin.go

@@ -24,12 +24,13 @@ import (
 	"crypto/rsa"
 	"database/sql"
 	"fmt"
-	"github.com/sirupsen/logrus"
 	"net"
 	"net/mail"
 	"strings"
 	"time"
 
+	"github.com/sirupsen/logrus"
+
 	"github.com/superseriousbusiness/gotosocial/internal/ap"
 	"github.com/superseriousbusiness/gotosocial/internal/config"
 	"github.com/superseriousbusiness/gotosocial/internal/db"
@@ -145,6 +146,7 @@ func (a *adminDB) NewSignup(ctx context.Context, username string, reason string,
 	u := &gtsmodel.User{
 		ID:                     newUserID,
 		AccountID:              acct.ID,
+		Account:                acct,
 		EncryptedPassword:      string(pw),
 		SignUpIP:               signUpIP.To4(),
 		Locale:                 locale,