Correcting whitespace, comment capitalisation and spaces in code I am about to change.

Issue: GCP-9750
Reviewer: none
- Adding icons to the property / variable drop down in the ontology browser screen.
- Changing the filtering of the property drop down to search over both variable / property name and class
- Moving the ontology tree display code to the browserInfo file, where I believe the only actual use of the code resides.

Issue: GCP-9750
Reviewer: Lisa Quayle