Pagecontainer: Add unit test for load method when no options are passed

(cherry picked from commit de70416b1b3a663f0586ddc3ea54d4b61db5250d)
Demos: Make casper tests check for JS errors and fail if any are found

(cherry picked from commit cb9112abb3acf73abc104051ac318647055b189c)
Revert "Events: Correctly refer to touch support module from tests"

This reverts commit fdfc2d6ad568884a8c3d1e1a5db2328083b76f1e.
Build: add new versions of core to be tested on travis