Release v0.3.1

Implement small fixes to v0.3.0.

• More thorough testing
• Remove unreachable code

Release v0.3.0

Stable release of swift openstack UI, includes:

• UI for browsing SWIFT objects;
• support for federated authentication of an user with their HAKA credentials using OpenStack Keystone;
• UI based on Vue.js with Buefy framework;
• asynchronous python web server with aiohttp;
• Docker image - https://hub.docker.com/r/cscfi/swift-ui;
• Unit Tests and UI tests;
• Documentation available at: https://swift-browser-ui.readthedocs.io .