merge changes to debug mission
work on #418 and #417
fixes #419
fixes #418
work #417
#383 added radio AN/PRC-154 for blufor
fixes #420
work on #408
some bug fixes in plugin (not finished)
changed anprc154 encryptionCode and corrected image from addons/images
deleted tf_dialogUpdate for anprc154
added kavinsky to readme :)
leaved tf_dialogUpdate blank string on anprc154
added localization for anprc154 reset channel
fixed background image of anprc154
Added ability to control SW/LR stereo mode with keys.

Ctrl + Up/Left/Right will set the active SW stereo mode.
Ctrl  + Alt + Up/Left/Right will set the active LR stereo mode.

Modes:
Up = Both
Left = Left
Right = Right
Updated English Readme with new key combinations.
Changed default stereo keys for LR from Ctrl + Alt + Arrow Keys to Alt + Arrow Keys
Added EN Readme credit for code changes.
Added key combination to cycle through available SW/LR radios.

Ctrl + Shift + A/D = Cycle through SW radios.
Alt + Shift + A/D = Cycle through LR radios.
Added radio cycle keys to EN Readme.
Update README_EN.md
corrected path of background for anprc154
Swapped condition checks to attempt to reduce used cycles.