Hi all

I've decided to disable Selenium tests on our Jenkins server.

There are several reasons for that and I hope we can get them fixed:

* Currently the Selenium tests just take incredibly long. I believe it is some problem on BrowserStack side as this was continuously getting worse since week or so.

* Many of the tests suffer timing problems causing random test failures.

* Running the Selenium tests in Travis is even worse in regard to timing issues.

There are Selenium tests ran on Travis and till these will be failing, I don't think we should rely on them to do some reasonable testing. However when merging some code, please check if there are not more breakages than before in these tests.