Fix strings by using StringUtils Class, static values
merge with upstream
Revert "add libraries in project"

This reverts commit 4af8d312d2d57352d3623b514218573f800403a1.
Revert "add MPAndroidChart, HoloGraphLibrary"

This reverts commit 5b9857bd204211789ed73c3f56810431577031c4.
Merge pull request #2 from eneim/nam_mobile_ui

Nam mobile ui
Merge branch 'master' of https://github.com/GreenRobots/JPHacks
add MPAndroidChart