Transfers form: avoid duplicates when clicking several times

[markets]

Hi @sseerrggii 👋🏼 this is an attempt to solve #607. Approach: use Rails native data-disable-with in the submit button, so when a user clicks, the button becomes disabled (similar as we did here: #517).

EXTRA 🎁
Minor Admin improvements:

• Add some missing attributes/filters in index pages.
• Allow to properly create posts. Basically add an Organization selector in this form. In future iterations, we need better control for that (probably using nested selects via ajax + new validations), but at least now you will be able to create "valid" posts from the Admin.

[sseerrggii]

Tested!!

Nice improvements @markets :)

On production, admin selects always are too large and difficult to find the element you are looking for. I usually use organization selector and usually I do tasks about last organization created, so order orgs by ID on this select boxes is a good first step for me, Could you check if all org selects are ordered by ID in your next EXTRA features? Thanks 💝

[markets]

👍🏼 yes! this is one of the "classic" gotchas of ActiveAdmin. I'll look for a proper solution in the next round! Since we already have the select2 library, maybe we can convert all these selects to "js selects" with the search integrated: https://select2.org/getting-started/basic-usage

[sseerrggii]

Yes, this will be nice :)