nvda

0c740348 - Context-sensitive help: foundations in NVDA object class with helpText getter. Re #2699.

Context-sensitive help: foundations in NVDA object class with helpText getter. Re #2699. Inspired by Control Usage Assistant add-on: add a method in NVDA objects named '_get_helpText' that presents help information for a control. It starts with focused control, MRO for the control (if it exists), the app, and finaly a generic message.