Hammer CLI

There's a problem with finding locales which prevents hammer from starting.

# hammer
/usr/lib/ruby/vendor_ruby/fast_gettext/translation_repository/base.rb:36:in `find_files_in_locale_folders': path /usr/lib/ruby/vendor_ruby/hammer_cli/../../locale cound not be found! (RuntimeError)
    from /usr/lib/ruby/vendor_ruby/fast_gettext/translation_repository/mo.rb:25:in `find_and_store_files'
    from /usr/lib/ruby/vendor_ruby/fast_gettext/translation_repository/mo.rb:9:in `initialize'
    from /usr/lib/ruby/vendor_ruby/fast_gettext/translation_repository.rb:14:in `new'
    from /usr/lib/ruby/vendor_ruby/fast_gettext/translation_repository.rb:14:in `build'
    from /usr/lib/ruby/vendor_ruby/fast_gettext.rb:28:in `add_text_domain'
    from /usr/lib/ruby/vendor_ruby/hammer_cli/i18n.rb:81:in `add_domain'
    from /usr/lib/ruby/vendor_ruby/hammer_cli/i18n.rb:94:in `<top (required)>'
    from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
    from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
    from /usr/bin/hammer:9:in `<main>'

Default gem installation on Debian puts all gems into one directory. Hammer tries to find locales in a directory that does not exist.
We should update hammer's i18n code to accept more translation locations.