CMFM: Display hex format when open a binary file

Change-Id: I375e41918f3ff9a4f42010746eeee43177c502fa
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
Merge branch 'cm-10.1' of https://github.com/CyanogenMod/android_packages_apps_CMFileManager.git into cm-10.1