cleaned up bash scripts; tested on vagrant

[rcursaru]

Major code cleanup! If your devices are not up-to-date (had already run update-12.sh), then a clean install is recommended Changelog:

• added $PI_GARDEN_USER_NAME(gradinar) and $PI_GARDEN_ROOT(/piGarden) to env
• made sure that patch.sh and createUser.sh are called by root or sudo
• removed redundant "sudo" prefixes in update scripts
• removed code from update-11.sh
• fixed missing -y in update-12.sh

[petre2dor]

@rcursaru can you fix this conflict please?