Selecttab is not working if previous is not found and transitions are supported

[hkdobrev]

I have stumbled upon this problem and has successfully solved it. I am opening an issue and posting my code here, so it's not lost and forgotten.

If anyone could create a pull request with it (and compiling of all of the generated js files) it would be great.

Here is the change:

On this line:

jam-tart/web/js/bootstrap-extensions/bootstrap-select-tabs.js

Line 60 in a5b234d

if (transition) {

The if should be changed to:

if (transition && $previous.length)

This is will allow the next() function to be executed if now previous element is found.