[#74948172] i18n
[#74948172] i18n
[#74948172] WIP Template#needed_data

This method will return an array with needed tags to render this
template
[#74948172] New method Template#needed_data

Template#needed_data returns an array with needed data for rendering.
Array has
- strings for root variables needed
- hashes for objects
[#74948172]set locale
[#74948172]remove localeapp
[#74948172] hide manual form if template needsdata
[#74948172]i18n
[#74948172] forward data from template to scheduled mail
[#74948172]remove :focus
[#74948172] fix ScheduledMail#data_hash
[#74948172] prevent manual deliver if insufficient data
[#74948172]i18n
Merge 74948172-liquid-for-manual-deliver to master

[Completes #74948172]