Major Change/Minor Overhaul of ImageDumping

[ImageDumpingActivity] made it list every partition to be available for
dumping. ( May filter it to put things like boot, aboot, recovery, etc
first when available. )
this works on msm and omap partition schemes. It is available on
undetectable partition schemes also but only lists /dev/block and
filters out any partitions with mmcblk in the name.

[SplashScreen] Took out the list of supported devices getting printed to
android log and root_tools.logger()

[strings] took out strings from the old ImageDumping.