[pkg] various fixes
- add missing files to MANIFEST
- exclude doc/changes from dh_installchangelogs (it's a directory, which
dh_installchangelogs doesn't expect)
- fix doc build in debian package
addressbook
basket
blog
book
calendar
comment
company
email
file
folder
i18ncontent
keyword
link
mailinglist
person
tag
timeseries
vcsfile