INTEG-341: [integ-wiki] INFO "cannot get page url" at wiki activity

Problem analysis:
* In Platform 3.5, page's URL is a full URL.
  Since Platform 4.0.0, the parameter only stores the path component.

Fix description:
* Create URL object only if the pageUrl value contains :// (which locates between the protocol and the host in a URL).
Merge pull request #17 from exodev/fix/4.1.x/INTEG-341

INTEG-341: [integ-wiki] INFO "cannot get page url" at wiki activity