Fix scroll in entities tables

[chriskormaris]

snap-admin/src/main/resources/templates/snapadmin/fragments/table_selectable.html

Line 33 in e9c5e52

<table class="table table-striped align-middle mt-3">

We want to avoid scrolling the pagination elements.
Please add a div container here with the class "overflow-auto", as follows:

<div class="overflow-auto">
<table class="table table-striped align-middle mt-3">