Comments on current Proof of Concept implementation

# Request for comments
@CATcher-org/developers What are your thoughts on this implementation of WATcher?
Any high-level comments on code architecture?

# Deployed
https://catcher-org.github.io/WATcher/

# Details
## WATcher Landing Page

Enter Github relative URL of the repository, e.g. CATcher-org/WATcher.

## WATcher Login and Authentication (ported from CATcher)

## WATcher Issue Dashboard (Ready for testing)

The Issue Dashboard retrieves pull requests and issues of one Github repository, and displays them as cards under the related user. The columns are automatically created from the repository's list of potential assignees. Clicking on the cards bring you to the issue on Github. On hover, you can see the date it was last interacted/updated.

Features:
- Search bar (ported from CATcher)
- Filter by Status (Open/Close), Type (Issue/Pull request), Sort (ID, Title, Date updated)
- Filter by labels
- Dropdown as you type, select the option or hit comma/enter.

Review the deployed WATcher proof of concept and the implementation details in this issue. Assess the code architecture and leave high-level comments; this issue is complete when the requested feedback has been collected and any resulting direction is recorded.

Written by the indexing model from the issue text.