+ Giant update to multiple users editing notes.

- Edits are done per DOM element, making diffs smaller and faster
- Multiple users can now edit the same note witheout it turning into a gaint mess
- Caret position is saved better and wont jump around as much

+ Removed Active sessions text

server/index.js

@@ -114,29 +114,12 @@ io.on('connection', function(socket){
 
 			//Emit all sorted diffs to user
 			socket.emit('past_diffs', noteDiffs[rawTextId])
-		} else {
-			socket.emit('past_diffs', null)
 		}
 
 		const usersInRoom = io.sockets.adapter.rooms[rawTextId]
 		if(usersInRoom){
 			//Update users in room count
 			io.to(rawTextId).emit('update_user_count', usersInRoom.length)
-
-			//Debugging text - prints out notes in limbo
-			let noteDiffKeys = Object.keys(noteDiffs)
-			let totalDiffs = 0
-			noteDiffKeys.forEach(diffSetKey => {
-				if(noteDiffs[diffSetKey]){
-					totalDiffs += noteDiffs[diffSetKey].length
-				}
-			})
-			//Debugging Text
-			if(noteDiffKeys.length > 0){
-				console.log('Total notes in limbo -> ', noteDiffKeys.length)
-				console.log('Total Diffs for all notes -> ', totalDiffs)
-			}
-
 		}
 	})
 
@@ -162,31 +145,13 @@ io.on('connection', function(socket){
 		
 		noteDiffs[noteId].push(data)
 
-		//Remove duplicate diffs if they exist
-		for (var i = noteDiffs[noteId].length - 1; i >= 0; i--) {
-
-			let pastDiff = noteDiffs[noteId][i]
-
-			for (var j = noteDiffs[noteId].length - 1; j >= 0; j--) {
-				let currentDiff = noteDiffs[noteId][j]
-
-				if(i == j){
-					continue
-				}
-
-				if(currentDiff.diff == pastDiff.diff || currentDiff.time == pastDiff.time){
-					console.log('Removing Duplicate')
-					noteDiffs[noteId].splice(i,1)
-				}
-			}
-		}
-
-		//Each user joins a room when they open the app.
+		// Go over each user in this note-room
 		io.in(noteId).clients((error, clients) => {
 			if (error) throw error;
 
-			//Go through each client in note room and send them the diff
+			//Go through each client in note-room and send them the diff
 			clients.forEach(socketId => {
+				// only send off diff if user
 				if(socketId != socket.id){
 					io.to(socketId).emit('incoming_diff', data)
 				}
@@ -213,7 +178,6 @@ io.on('connection', function(socket){
 				}
 			}
 
-
 			noteDiffs[checkpoint.rawTextId] = diffSet.slice(0, sliceTo)
 
 			if(noteDiffs[checkpoint.rawTextId].length == 0){