Reverted to traditional arrow key scroll direction (non-natural).

Even after using it for a long time, it didn't take. Something keeps
making me think I'm moving the camera as opposed to moving the content.
Probably because I'm holding the keys ratther than actually moving
something.
Add 3 Dependee connectors instead of one.
Minor.

Changed FolderListingWidget starting path from "." to "..".
Noop.

Formatting change.
Ability to minimize TextFileWidget.

Added m_MinimizeToggle pointer in TextFieldWidget, instance in
TextFileWidget.
Improved widget scale calculation.
Changed RequestTypingPointer() to accept null reference (and ignore
it). Should change it to accept pointer instead.