simplify alt signal style

Change-Id: I926d24fbd65fe45d6187f8527330cd8d076187fd
remove useless calls to getLayoutParams

Change-Id: Ie6bf0a8bdcf67324b4704656eee9a3f42915ff42
remove all scaleTypes attributes from statusbar icons

Change-Id: I13ef8352ba26a7691410cd6cd16e943ec3572528