Added installation files for splashscreen.
Fixed misspelling
Changed the from /dev/null to null
Changed back the null thing
Some new tools

ipe-r(w/o) will make the SD card read only or read write.
elvis-screen will start the client and server in screen sessions for debugging.
Tool to make the zwave settings persistant when assosiated the plugs.
Tweaking the tools update-zwave-config now has some intructions.
Make maximum value to measure always attainable

Fixes #68.
Improve whitespace in code