Text effects tests

# Sliders

## Standard horizontal slider

## Vertical slider

## Slider with predefined values [2,4,6,8] and a non-default range [2,15]

## Slider with multiple handles

## Slider with multiple handles and predefined values

## Slider with multiple handles, external controls, handles are restricted (can't be moved prior/after adjacent handles)

<-- -->

## Fun with spans

1
2
3

## Slider with span and [1,10] range (test for #3731)

!
!