We were very inconsistent regarding these rules.
Personally I prefer no empty lines around blocks, clases, etc... as
recommended by the Ruby style guide [1], and they're the default values
in rubocop, so those are the settings I'm applying.
The exception is the `private` access modifier, since we were leaving
empty lines around it most of the time. That's the default rubocop rule
as well. Personally I don't have a strong preference about this one.
[1] https://rubystyle.guide/#empty-lines-around-bodies
* Adapt translatable spec helper method to work with budget investments
* Remove old attributes from strong parameters
* Add missing locales to admin.yml and budgets.yml
* Change SpendingProposal.title_max_length and
SpendingProposal.description_max_lenght to Budget::Investment methods
* Add budget investment translatable attribute translations
