admin_backup select all not working

[Brandin]

Unsure why - I didn't look into this, but here is the function I swapped it out for...

Replace the select all button in the headings with:

Code:

<input type="checkbox" id="checkall" value="1" onclick="checkCheckboxes(this.id, 'maindiv');" >

Add

Code:

id="maindiv"

to that div ~ line 498.

Add this haste of JS:
https://hastebin.com/qogabiheda.xml