Reorganize packages, closes #79

- All packages go into either cmd or pkg directories
- Most packages renamed
- Server packages moved into pkg/server
- sanitize moved into webui, as that's the only place it's used
- filestore moved into pkg/storage/file
- Makefile updated, and PKG variable use fixed

pkg/rest/model/apiv1_model.go

@@ -0,0 +1,45 @@
+package model
+
+import (
+	"net/mail"
+	"time"
+)
+
+// JSONMessageHeaderV1 contains the basic header data for a message
+type JSONMessageHeaderV1 struct {
+	Mailbox string    `json:"mailbox"`
+	ID      string    `json:"id"`
+	From    string    `json:"from"`
+	To      []string  `json:"to"`
+	Subject string    `json:"subject"`
+	Date    time.Time `json:"date"`
+	Size    int64     `json:"size"`
+}
+
+// JSONMessageV1 contains the same data as the header plus a JSONMessageBody
+type JSONMessageV1 struct {
+	Mailbox     string                     `json:"mailbox"`
+	ID          string                     `json:"id"`
+	From        string                     `json:"from"`
+	To          []string                   `json:"to"`
+	Subject     string                     `json:"subject"`
+	Date        time.Time                  `json:"date"`
+	Size        int64                      `json:"size"`
+	Body        *JSONMessageBodyV1         `json:"body"`
+	Header      mail.Header                `json:"header"`
+	Attachments []*JSONMessageAttachmentV1 `json:"attachments"`
+}
+
+type JSONMessageAttachmentV1 struct {
+	FileName     string `json:"filename"`
+	ContentType  string `json:"content-type"`
+	DownloadLink string `json:"download-link"`
+	ViewLink     string `json:"view-link"`
+	MD5          string `json:"md5"`
+}
+
+// JSONMessageBodyV1 contains the Text and HTML versions of the message body
+type JSONMessageBodyV1 struct {
+	Text string `json:"text"`
+	HTML string `json:"html"`
+}