Shared notes now share updated times

* Updating a shared note, updates the information for other shared users
* Unread shared notes now have a badge
* Updated shared notes now have a badge
* Shared notes can not be reshared, sharer username appears in interface to stop sharing
fixes #15

server/models/Tag.js

@@ -211,12 +211,13 @@ Tag.latest = (userId, noteId) => {
 		.query(`SELECT tag.text FROM note_tag 
 				JOIN tag ON note_tag.tag_id = tag.id
 				JOIN note ON note_tag.note_id = note.id
+				JOIN note_raw_text ON (note_raw_text.id = note.note_raw_text_id)
 				WHERE note_tag.user_id = ?
 				AND note_tag.tag_id NOT IN (
 					SELECT note_tag.tag_id FROM note_tag WHERE note_tag.note_id = ?
 				)
-				GROUP BY tag.text, note.updated
-				ORDER BY note.updated DESC
+				GROUP BY tag.text, note_raw_text.updated
+				ORDER BY note_raw_text.updated DESC
 				LIMIT 8;`, [userId, noteId])
 		.then((rows, fields) => {
 			resolve(rows[0]) //Return found tags