ba_trials regression

[mverouden]

The revision of the ba_trials call caused a regression with respect to the BrAPI specifications. On the test-server the argument active can have three values:

• all results for active = true and active = false are shown
  true only results where active = true are shown
  false, where only results when active = false are shown

By setting the argument in the ba_trials to only logical the BrAPI R package does not allow for displaying all results. For that reason active = "any" was introduced.

[mverouden]

Resolved the issue by setting active = NA as default setting