Automatic installation of git and dialog if missing

[jancborchardt]

Currently there’s a check for the git and dialog packages. If they are not present, the setup exits:

OwncloudPie/owncloudpie_setup.sh

Lines 65 to 66 in b7849d2

	type -P git &>/dev/null && echo "Found git command." || { echo "Did not find git. Try 'sudo apt-get install -y git' first."; doexit=1; }
	type -P dialog &>/dev/null && echo "Found dialog command." || { echo "Did not find dialog. Try 'sudo apt-get install -y dialog' first."; doexit=1; }

Instead, we could just let the script do the commands and install the packages, right?