CB-7056 serve: fix Android test, make tests conditional

Fix **Android** merges codepath, as it turns out that merges
doesn't need the platform specific hack.

Adding **BlackBerry 10** test.

**Android**, **iOS** and **BlackBerry 10** require specific scripts
to be available, otherwise they fail.

Introduce `itifapps` and `cit` (conditional `it`) based on **Jasmine**'s:

* `xit` -- ignore test
* `iit` -- run these tests, but skip it tests
* `it` -- run these tests, unless there are iit tests