Start a branch for the new and improved install process.
First bash at new install process - do not expect this commit to be bug-free.
Documentation updates that I forgot to commit (ta Aidy).
Added missing prereq of Term::Prompt; removed some hardcoding.
Make it clear in SETUP that the script_url needs an http
Standardise slash vs. no slash on ends of directory names in install process (cosmetic change only).
Documented use of wiki-toolkit-setupdb for people who need to rerun the table creation process.