update references to the wiki to https instead of http, remove random windows
line endings from some older files and fix some minor typos/whitespace issues
a small number of old presskits had links to various logos and images
hosted on developer.postgresql.org/~josh which is not really ideal, especially
for the three occurances where they where used as <img src=> so refer to files
we already have under media/img/...
convert some absolute url references to relative ones, still more to go...