Fix form duplication when id > 999 and localized

For ids higher than 999, the localization is formating the number as
1.234, or 1,234.
This format make the 'updateAllExerciseFormset' js function to fail
trying to delete the previous form:
$('#formset-base-' + exerciseId).remove()

So, each time the slider is changed, a new form is appended at the end.

AUTHORS.rst

@@ -75,6 +75,7 @@ Developers
 * Gabriel Liss - https://github.com/gabeliss
 * Alexandra Rhodes - https://github.com/arhodes130
 * Jayanth Bontha - https://github.com/JayanthBontha
+* Adrian Lopez - https://github.com/adrianlzt
 
 Translators
 -----------

wger/manager/templates/set/formset.html

@@ -1,5 +1,5 @@
 {% load wger_extras crispy_forms_tags i18n %}
-<div id="formset-base-{{ base.id }}" class="mt-3">
+<div id="formset-base-{{ base.id | floatformat:"0u" }}" class="mt-3">
     <label class="control-label fw-bold">
         {{ base.get_translation.name }}
     </label>