FABADA: use single random number generator.

This reverts commit f74b7109, reversing
changes made to 86e0bbd8.

Set bin count in CentroidPeaksMD

Fixing indirect interface documentation

Set the phi value to 0 in XYE MAUD headers

Add goniometer to FilterEvents

If it is smaller than 500 * (Maximum number of threads), the method reverts to the original
unthreaded version of the function. This old function is also the one used if the input
array has random access iterators.

This should fix slow python.api tests and hopefully should get rid of the timeouts on build servers.

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.

Re #22317

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.

Includes reformatting additional code to clang-format-5

Update to clang-format-5 and reformat the codebase