Banners were not been shown in certain pages; now
they are.
Spec to check if the banner is been shown correctly
added. Before it was in admins specs, now it has it's
own spec out of admins folder.
When there are no budgets we were seeing an exception in the budgets’
index
There are two parts to take into account here:
1) Making sure there is a current_budget present, otherwise we display
the “no budgets” message
2) The map helper is called from the controller, so we need to make
sure current_budget is present there too
Note: We could have added a bunch of `try` statements in the budgets’s
index, instead of using a conditional, however there are quite a few
`current_budget` calls so it seems more appropriate to use a conditional
Clear instance variable names help understand what's going around when
you're deep 2 or 3 partials. In this case @budget is only used to carry
around the current_budget so @current_budget is more descriptive.
Using `current_budget` directly around would be an alternative, but
maybe not as maintainable in case we want to change which budget is
being shown (for example the drafting one if you're admin).
We only need finished budget's at budget's index "Finished budgets"
section. So we add the `finished` scope to @budgets variable, and rename
it so its clear what it contains.
Also avoid showing the "Finished budgets" section if there is none
During a Participatory Budget, some users are getting confused and
creating a proposal instead of a budget investment. This intermediate
page should help them create investments
Adding a feature flag just in case other forks don’t need this feature
and setting seeds and dev_seeds for appropriate initial setup
