#11: Spurious error on duplicate keys with admin sync, and changes on configuration for owners/moderators

Created by: ikedas

This PR depends on PR #267.

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Bug fix:

• Issue #11 (closed): Spurious error on duplicate keys with admin sync
  • Now sync_include_admin() passes cache and updates admin_table directly.
  • It no longer reload owner/editor in list config.

Changes/improvements:

• Form to edit owners and moderators are removed from list config page: They have their own menus.
• When a list is created, initial owners and moderators are importd from dump file in list directory: owner and editor parameters in config file are no longer loaded.
  • However, when list is created using list creation template, owner and editor are split into dump files automatically: users need not update config.tt2.
  • And however, when administrator manually creates a list by creating list directory and config file, they also have to put dump files and have to run sympa.pl --restore_users.

Known bugs:

• Big data source consumes large memory, because entire records are read at once when users are synchronized. Fixed
• Owner/editor edition pages do not respect privileges defined by edit_list.conf. This will be fixed later. Fixed