Hawese: link and charge actions
README: Made with LeanWeb
Fix: Debian setup improvements
Better error handling on Hawese.receipt
Fix: Set Rack::Session::JsonFile session dir to 1777 mode
debian_setup.sh: Install development dependencies only on development
Fix: debian_setup.sh: don't exit on read success!
debian_setup.sh: support Debian 12 now
Fix: Show NoMethodError coming from templating engines
Default action available for dynamic routes
LeanMail allows Reply-To header and validates.

- Reply-To header support.
- Email validation for to and reply_to fields (not from, since is not
  expected to be entered by user).
- Should be safe against SMTP header injection.
Hawese payment receipt support
leanweb new: don't require git
leanweb new: don't create public/assets
Fix: Redcarpet content type
Hawese: Handle origin according to new payment API