Before, when adding a simple integration, the delete button was missing until
the configuration was saved. This behavior was introduced in #4269, but I think
that it was a regression.
Now, the delete button is back and everything is working as it should.
In the process, I've extracted templates in attributes and add them in template
tags. This way, it is easier to validate that the HTML code is valid.
* Update Travis line length
* Also check whitespace in CSS files
* Fix line length ext.php
* More syntax, string templates
* Fix exclude-pattern
* Test JS files as well
I've refactored the user query code to be able to use it also on the
integration configuration page. Now, items can be re-organized as in
the user query list.
