Force empty cache necessary on Browser with embedded API viewer

[Kusig]

When using Apikana Jar files with embedded browser, the browser does show always only the first one viewed. Any further API jar file started, does provide the same URL and therefore the browser shows just the cached former page.

Pressing Ctrll-F5 resolves the problem.

The corresponding webpage served by Apikana should be adapted to disable caching in order to force the browser to always load the current API definition instead.

Linked to https://jira.post.ch/browse/SDCISA-6387