Version 0.2.2-beta-release

Following updates is included since the last release 0.2.1-beta-release

• 194de5a Fix the file-loader setting to load images correctly - (NI) 4AC3E3D5FDD208F7 U
• 19a5715 Upgrade backend and front-end dependencies - (NI) 4AC3E3D5FDD208F7 U
• 2874531 Fix favicons - (NI) 4AC3E3D5FDD208F7 U
• bc7f20e Code clean up - (NI) 4AC3E3D5FDD208F7 U
• d8a599b Separate invalid key and unmatched key error - (NI) 4AC3E3D5FDD208F7 U