removed FunctionControlledDT.  I never use it, and it's rather inconvenient to use anyway compared with the MOOSE-supplied timesteppers, and it is untested
OrientedBoxMarkerDepr removed from Richards.  Use moose OrientedBoxMarker instead
Fixed #3046 .  Seemingly huge update with no functionality change - just cosmetic stuff.  Most of the work was doxygenating everything.  Also i made use of RangeCheckedParam whenever i could.  All auxvar/pp/fcn stuff is up-to-date with the new default-for-coupling.  However, i have NOT changed RichardsMaterial since i need to consider backwards compatibility, as mentioned in the comments to ticket #3046
Merge pull request #3109 from WilkAndy/feature_3046

Feature 3046
Merge commit '723e9bb767327d5cce1c8d79c3602b7883d2b742'