Merge changes from dev to main

[nandyalu]

Changes:

• Updated return value on failed downloads so that app will try and download another video. Fixes issues where video is not available in the country, age restricted video, etc..
• Updated RadarrDataParser to parse movie data without youTubeTrailerId. Fixes #7
• Changed ffmpeg install to check OS architecture and install the correct version. Fixes #9
• Updated API calls from Movies page. Fixes #11
• Updated Dockerfile to create appuser with the PUID and PGID supplied while creating container. Fixes #12
• Added new Setting for TESTING so that enabling debug mode does not change database to in-memory database!
• Visual improvements in Frontend!

[flowcool]

There's an issue with PUID/PGID setup:

Creating user and group 'appuser' with UID '1027' and GID '100'
groupadd: GID '100' already exists
useradd: group 'appuser' does not exist
Changing the owner of app and data directories to 'appuser'
chown: invalid user: ‘appuser:appuser’
chown: invalid user: ‘appuser:appuser’
Switching to user 'appuser' and starting the application
error: failed switching to "appuser": unable to find user appuser: no matching entries in passwd file