Add a simple UI

[pulkitsinghal]

Phase 1:

1. Login
2. See all of the messages that are meant for you (The key idea here is to find out about, generate and start using lb-services client file in your Angular UI)

Phase 2:

1. Login or Signup
2. See all of the messages that are meant for you

Phase 3:

1. Login or Signup
2. see names of people whom messages came from
3. drill down into each name to see the messages from that person

Phase 4:

1. Login or Signup
2. see names of people whom messages came from and a button to send messages
3. ability to open a new conversation or reuse an existing conversation when sending message
4. ability to go back to the conversation list page
5. drill down into each name to see the messages from that person and the ones you sent to them too