Re-apply removal of AuxBCs (#3021)
Minor tweaks related to internal applications
{#3021)
modify PointValue to make it more general #3180
Merge pull request #3181 from friedmud/pointvalue_3180

modify PointValue to make it more general
Issue #3163. Added onMeshChanged().
Merge pull request #3177 from snschune/feature_3163

Issue #3163. Added onMeshChanged() and changed meshChanged() back to non...
Merge pull request #3166 from aeslaughter/revert-revert-3021

Re-apply removal of AuxBCs
Fixed #3127 .  This can now be merged, as far as i'm concerned!  Can now specify rotation angles about specified vectors before and after translation in SolutionUserObject.  The transformation_order specifies the order of transformations, suprise suprise!  i have added six tests that i hope will catch most bugs.  RotationMatrix utility function has been added: it is used by RichardsBorehole also; and it is tested in unit tests.