Onboarding, Sent box and Outbox (#45)

* main

- Set

* Working

* Welcome

- Added welcome message generation

* Smtpsender

- On successful SMTP send create the "Sent" box and then
try move from "Outbox" to "Sent"

* Sent box

- Create the mailbox in `main.go` and not every time we try move from `Outbox` to `Sent`

* Use logegr

* USer

- Added logger pointer (and made use of it)
- Disallow renaming or deletion of 'Sent'

* When creating a new user set it up with logger

* Encoded message

* Added tests

* Send a welcome mail on startup (soon to mke it only happen once)

* try set flags

* Onboarding flag set

* Sender
- Removed testing code

* Welcome

- Moved welcomer code

* Cleaned up

* Added more

* renamed package

* Removed comment

* welcome

- FIxed variable names

* welcome

- Removed semi-colons
- Fixed imports

* welcome

- Ran `gofmt`

* welcome test

- Fixed up

* h

* main

- Ran `gofmt`

* Main

- Fxied

* Welcome

- Foxed name

* Added `.gitignore`

* Mailbox

- Disabled print logging

* Fixed

* fixedg

* fixe and use `%v`

internal/welcome/welcome_test.go

@@ -0,0 +1,21 @@
+package welcome
+
+import (
+	"fmt"
+	"testing"
+)
+
+func Test_WelcomeGenerate(t *testing.T) {
+	newUser := "Tristan"
+
+	// generate welcome message header
+	bytesOut, e := welcomeMessageFor(newUser)
+
+	if e != nil {
+		t.Fail()
+	} else if len(bytesOut) == 0 {
+		t.Fail()
+	}
+
+	fmt.Printf("Out: %v\n", bytesOut)
+}