[cleanup] better class/modules names for a few items
[evol] translation rework: new mechanism to handle translated/untranslated strings, make use of translation parameters, moved I18n class, translations update
[fix] set_language() must change locale for ALL domains
[evol] revised CyberError severities
[fix] correct silly mistakes
[evol] added language selection in the Person through a new I18n class providing the link between local available languages and user preferences in the database
[evol] commands management rework #2: moved command parsing out of the Mail class and created new classes to handle it
[evol] added setup.rb installer, with hooks to generate locales and a 'lib/cyborghood/config.rb' file having a new CyborgHood::Config providing with installation paths, and created CyborgHood::Info to contain software general information (rakefile build-depends are then reduced to the minimum)
[fix] gettext domains are binded correctly now (using a new PostmanHome submodule to separate domains easily)
[fix] gettext is working now, nevertheless the domain selection is ugly
[fix] corrected remaining mistakes with the references, and gettext-related code
[evol] added gettext support using user prefered langage
[RM] let's move to next devel stuff
[RM] let's update the version
[evol] add missing licensing terms
[evol] replay protection #2 (should be done), and moved 'run' directory in the new workdir (temporary code until real path configuration)
[evol] renamed custom exception and converted an old remaining exception
[evol] move new classes into CyborgHood module and add new exception handling
[fix] don't fail to merge bot-specific config if it is empty
[evol] Logger can handle setting a permanent prefix (until reset)
[evol] split test file into libs