Change order onShow and insert node

[grrodre]

I came across the same problem as described here.

Getting the element in onShow callback to show/activate a modal won't work if doInsert is placed after the callback.

Changing the order seems to work.

[sergei-maertens]

Hi - just letting you know I've seen this PR and hope to soon (within the next few weeks) have time to look into it!

[sergei-maertens]

@grrodre in #119 I am working on solving the bundler/npm i challenge of this JS, I will probably incorporate your fix in that PR or otherwise handle it after that is merged, since the source files for the cookiebar module move.

But since the e2e tests seem to be passing, I suspect this is/will be a no brainer!

edit: it seems that the tests aren't actually running, I'll need to sort that out!