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
There were some custom routes created using the param[:id] but the
Rails routes use the param[:budget_id] by default, so the same
controller could be asked for different param keys.
Note that we are relying on the existing `sort_by_name`[1] method in the `Budget::Heading` class.
This method sorts by DESC group name first and then ASC heading name.
[1] https://github.com/AyuntamientoMadrid/consul/pull/1875
