Merge remote branch 'origin/bugfix/6870_live_event_times'
Merge remote branch 'origin/feature/6857_autoreduction_helpers'
Merge remote branch 'origin/feature/6873_hanging_helpwindow_singleton'
Re #6858. Quieting doxygen errors.
Re #6858. Making indexes explicitely depend on some sub-projects.
Re #6858. Added infrastructure to extract wiki from IFunctions.
Re #6858. Added docs to IFunctions.

What little wiki docs there were have been (verbatim) copied over.
Merge branch 'feature/6858_fitfunc_wiki' into develop