Chat component

[casparss]

Features

• [ ] Message notifications - users need to see notifications when a user has messaged.
• [x] Message badge should update with unread messages
• [ ] Push notifications will come later

Fixes and enhancements

• [x] keyboard closing on send
• [x] Improve performance loading chat. Every time a chat loads it flickers loading the actual chat content. Loading-img is causing a bit of this
• [x] Improve performance when sending a message. At the moment, the entire chat array is pushed through through a transformation function to add the correct dates in. This is overkill for just adding a single message as Angular re-renders the entire collection i think. Should just push another message to the bottom without and determine whether a date is added without transforming the whole array
• [x] the inbox, to stay in-sync, fetches a new list of chats whenever component is focused, the http response is usually a 304. Would be good to detect the 304 and only re-render the list if the cache is stale
• [x] Bugs with the chat to do with websocket/socket.io/background timer throttling - need to diagnose and work around

[casparss]

Couldn't find a fix to stop the keyboard closing so had to settle with a workaround, using the return key instead for sending messages that don't close the keyboard.

[casparss]

• [ ] now that keyboard uses return key, there needs to a tip telling the user about it