rename `stratcomm` to `strc`
ignore `_notes` directories

because dreamweaver is lame
updates to cff and twp plugin styles

@loafintree

Signed-off-by: Chris Montgomery <mont.chr@gmail.com>
accessibility fixes

- added ARIA landmark roles where they should be

- added "skip to main content" link

Signed-off-by: Chris Montgomery <mont.chr@gmail.com>
fixed incorrect enqueue css filter for mc-phd
updates to plugin styles

blame @loafintree, @montchr