raspberrypi-ua-netinst v1.5.0

Very important note:
This is a release with many big improvements and important changes!

If you are coming from an older version, check your configuration options to see if they need to be changed and note that the customization files need to be placed in a new location! Also check, if you still need the "post-install.txt".

Changelog:

• consolidated and changed location of all custom configuration and installer files
• changed handling of custom files, so the "post-install.txt" is not required any longer for this
• set F2FS as default root file system
• added or changed configuration variables
  • enable SPI and I²C (I2C)
  • configure I²C baudrate
  • wifi region
  • changed root_ssh_allow to root_ssh_pwlogin
  • disable SSH password login completely
  • HDMI settings
  • remove installer after success
  • remove installer log files after success
• added logrotate to default server packages
• allow providing SSH public keys as files
• retry downloads if errors occur
• added more timezones
• many more big and small backend improvements

Bugfixes:

• filtered unnecessary installer warnings
• enable devices even if a custom config.txt is used
• configure system default locale if locales option is not used