Changes for MT1 Firmware updater

V2.2.2.1    03.02.2021
	* improvements for deployer

V2.1.12.1   10.12.2021
	* #3116 (only for deployer) is closable only when the new version was read

V2.1.4.1    20.04.2021
	* Device detection improved

V2.1.3.1	02.03.2021
	* Update process improved
	* no update if version is up to date (beware of .config file)

V2.1.2.1	18.02.2021
	* Improvement for deployer (kill communication thread on closing)

V2.0.11.2   20.11.2020
   * Display version number correctly

V2.0.11.1   13.11.2020
   * Fastened the version request between plug off and on of devices

V2.0.10.1	30.10.2020
   * Improve version requests

V2.0.6.1      05.06.2020
   * Enable start update after the update failed

V2.0.4.4      01.04.2020
    * prevent "Start update" on automatic update start

V2.0.4.3    01.04.2020
    avoid mulitple instances
    Bug solved at ZIP File support

V2.0.4.2    01.04.2020
    * Added translations

V2.0.4.1    01.04.2020
    * Extended ZIP File support
    * Added translations
    * Software Updater not in background anymore

V2.0.3.1    2020-03-26
    first official version