Set bin count in CentroidPeaksMD

Fixing indirect interface documentation

Set the phi value to 0 in XYE MAUD headers

Add goniometer to FilterEvents

LoadDNSLegacy: add elastic channel property

Activate core dumps on Linux before running tests

Add a receive timeout to FakeISISHistoDAE socket

Occasionally the doctests hung while trying to exit MantidPlot and gdb showed
it waiting in Poco::Socket::receiveBytes forever. The timeout ensures it quits
in good time.

This requires the SIGSEGV signal handler to be disabled to work correctly but
we have never got much useful information from this...

Get LoadIsawUB working with MDHistoWorkspace

Make project recovery properties more findable

They were described on the project recovery page, which is probably not
where users are going to look for properties.

Add missing SingletonHolder header

Includes applying clang-format-5 to changeset.