We had helper methods all over the place which were only used in one
view. Since we're going to change some of them to use the budget as a
parameter, they don't belong in those helpers anymore.
Note the method `budget_heading_select_options` is used in more places,
so we're keeping it where it was.
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
The name `safe_html_with_links` was confusing and could make you think
it takes care of making the HTML safe. So I've renamed it in a way that
makes it a bit more intuitive that it expects its input to be already
sanitized.
I've changed `text_with_links` as well so now the two method names
complement each other.
There's no good reason to call assigned_valuators(investment) when the
logic can be at the model.
Also removed the valuator_groups texts to be added in an independent
method
