Get rid of more "the ... manpage" POD things

Get rid of more "the ... manpage" POD things
Fix TT 2.15 issue with "first" in CatalystBasics.pod
Add section on debugging tips from Matt Trout
Add note and code about not putting passwords on
command line from Gavin Henry
Fix HTML:Widget typos
Fix mising "Catalyst::Plugin" in Intro
Add note/tip about non-bash shells into CatalystBasics.pod
Fix Delete to delete for POD tests
Add comment about "%/^   " in vi/vim tips of appendix