Memory leak in Butler when starting Sense tasks

[mountaindude]

Describe the bug
There is a slight memory leak that occurred when Sense tasks were started using Butler's API endpoint for this purpose.
Nothing major but still something that should be addressed.
https://github.com/ptarmiganlabs/butler/blob/master/src/qrsUtil/senseStartTask.js

The issue occurs when the options object is mutated and then passed to the Sense APIs over https.
Also, this code does not use the config data already loaded into the config object, but rather loads the data again. Inefficient.

Suggested solution:
Refactor the code, possibly using QRS Interact module instead of https calls. Would give better CORS handling among other things.