Fixed build phase scripts to modify Info.plist in the target build directory instead of the source directory.

I modified the scripts to use Info.plist in the target build output directory where Xcode compiles the app. In Xcode, I set the build version to 0 which added CFBundleVersion to Info.plist. If the scripts execute successfully, the build version should be set to the current git commit short SHA. If the scripts fail, then the build version will be 0.

I also removed the reset script since the other scripts no longer modify any source files.