* Add transaction filtering by category
* Link label to checkbox
* Keep the dropdown open when clicked to allow tab change
* Show the badge with color and name when filter is applied
* Reduce color height
* Adds basic validations for required fields
Also deletes a few extraneous .keep files
Does not add the family_id required field for user, since that breaks the basic test setup
* Restore keep files to this branch
* Remove Credit model and validate models behind ids
* Restore concerns .keep
