refs #8381. Start reverse control flow work.

I have also exposed peaks presenters via python. Seems to work ok thus far.
refs #8381. Updating working both ways.

Selected aspects can be controlled both from the GUI and via python. Tests will need reworking.
refs #8381. Zoom to peak via python.

Zoom to a peak of a specific peaks presenter and select the corresponding row in the mini peaks workspace.

This is associated with a fix in what thread the code is executed upon. There is a Hack (marked HACK) in one of the presenters that will need fixing yet.
refs #8381. Refactoring and fixes.
refs #8381. Fix tests.

Some of the CompositePeaksPresenter tests were broken by the previous changes.
refs #8381. Extend python tests and fix bug.

Bug was causing the 'Hide' button to get activated for no reason.
refs #8381. Change to American English.

Color is more consistent in the python API. Since this interface is being exposed via SIP. It makes sense to rename the colour functions.
refs #8381. Update sip documentation.
Merge branch 'feature/8381_python_peaks_presenter' into develop