Yawls release 1.2.2

Written for Yawls by Dominik Brämer on 2015-09-06

New upstream release available.
Contain the following improvements:
  * Update GUI
    - Split GUI windows into separate classes
    - Update configuration entries after reset
  * Update yawls_cli.sh
    - Add better SIGTERM/SIGINT support (LP: #1475841)
  * Update engine/Brightness.java
    - Improved performance
  * Update translations
  * Add backlight device interface
    - Make it possible to add other backlight control methods.
  * Add engine/MinMaxContainer.java

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