support for regexp_mapping.json to provide regexps (from mailman) to map to Sympa glob patterns in whitelist/blacklist/modlist

provide possibility to transform regex blacklist/whitelist entries into mapped glob patterns

using member.dump generated from gen_config instead of mailman-subscribers3.py
installing modlist.txt generated by gen_config similar whitelist.txt

generating member.dump from member config
added moderated resp. whitelisted members to corresponding list if list is "open" resp. moderated, thus writing out modlist.txt
set creation_email to first owner in XML
normalize all emails for LDAP users to their primary mail address to allow mapping membership/ownership for logged in users

support for gen_config's info file

use special template mailman2sympa to set much more settings
also set 'info' based on 'advertised'
improved migration of subscribe_policy, added support for unsubscribe_policy
support for mapping private_roster to 'review'
support for anonymous_list, max_message_size and digestable
added comment about ignored/unsupported mailman settings
write list info into given info file

write out blacklist.txt and whitelist.txt for sympa
fix generated config for sympa-6.2.70

- converted from zsh to bash
- fixed path to helpers
- using REMOTE mailman via ssh
- new member importer using mailman-subscribers3.py to generate a
  dumpfile for restore_user, now supporting all kinds of digest,
  nomail, notmetoo and hide flag, mod flag also possible but not yet
  supported in sympa
- dropped notify_owner stuff

it's still very general, but previously it broke multiline html