include attribute name in confirmation error message

this follows en.yml change in https://github.com/rails/rails/commit/fcc534e

see: https://github.com/rails/rails/pull/5942
Add errors.messages.present key for Rails 4
:ja message for AbsenceValidator

see: https://github.com/rails/rails/commit/d72a07f
 and https://github.com/rails/rails/commit/ac6941f
Fix number delimiter and separator for Italian #291
Update rails/locale/ro.yml

Romanian language shows currency in the format: 123.300,50 i.e. separator is ',' and delimiter is '.'
Days and months must be lower case.

The names of days and months are common names and must NOT be capitalized.

[cit. from http://www.accademiadellacrusca.it]
I nomi dei giorni della settimana e dei mesi dell'anno non richiedono la maiuscola, eccetto nei casi in cui vengano attribuiti come nomi propri (ad esempio Domenica come nome proprio femminile).
Merge pull request #312 from mperrando/rails-4-x

Days and months must be lower case.
add messages for has_many / has_one with dependent: :restrict_with_error
Merge pull request #333 from kuboon/rails-4-x

add messages for has_many / has_one with dependent: :restrict_with_error
added pt-BR translations for errors.messages.present and errors.messages.restrict_dependent_destroy
Merge pull request #339 from rachel-carvalho/rails-4-x

added pt-BR translations for errors.messages.present and errors.messages.restrict_dependent_destroy
Merge branch 'master' into rails-4-x
Include %{attribute} in confirmation error message
Update README.md (available locales)
Bump version to 4.0.0.pre