Fix for #975 (Copying camera position images in file dialog does not work).
Added fastfwd button to be updated later. Changed step fwd and back icons. Disabled tracking params while loaded
Merge with remote develop
Fix for #993 (Analysis does not produce any results).

Have made error reporting (via popup dialog) and error logging more
"consistent". (For Post Processing, a Floor Mask is not mandatory -
but limits the results produced. Both a Floor Plan and a Mask are
needed for (sensible) Results Analysis so that has been made clearer.

Also included is replacement of the (corner) help button with a save
button. This is only visible when changes to the workbench have been
made - it makes it clear (and easier) to the user that a save is needed.
Merge with remote evelop
Added missing include and re-ordered initialisations