Fixed message missing error
Fixed bug on refresh time combobox
i18n imporvements on layer module
Complete i18n on Map module
Complete i18n on Memento Persistence module
Complete i18n on Notification module
Complete i18n on Oauth2Widget module
Added FeatureAttributeWidget with validators to save the new feature drawn attribute values
Added buttons i18n
Complete Print Module i18n
Merge branch 'master' of https://github.com/geosdi/geo-platform