Add missing imports from gcc 10

Update FDA plotting and fitting

Co-authored-by: StephenSmith25 <56431339+StephenSmith25@users.noreply.github.com>
Co-authored-by: Yannick <ymeinerzhagen@web.de>

Correct return type in sip declaration

Typo corrections to PythonInMantid Documentation

Defaults the constructor which was copying all fields anyway and removes
the user provided impl

Adds back operator= which got removed incorrectly for FixedLengthVector
and uses the CAS idiom whilst were at it

Removes the protector destructor, since this prevents the compiler
default move consturctor from destructing the object

Setting up a new macOS builder gave segfaults
when MantidPlot was shutting down. The debugger
pointed to the interpreter dock already having
been deleted by Python before the C++ closeEvent
line 'delete m_interpreterDock'. The assumption
is that the return type not being marked as a
pointer confused sip and forced it to take
ownership and delete it. We fix the return
type and this has fixed the segfault

Disable ConvFit plot guess checkbox if no resolution file loaded

Fixes failures seen on OSX for master and some unreliable test failures around live testing

Replaces some user copy constructors with default where appropriate

Adds some missing headers calling compilation errors locally

Converts some boost::shared_ptr instances to std::shared_ptr so we don't
regress this back. Adds some missing headers for those too

Removes undef behaviour where we are inspecting a moved object. The
standard states the value is undefined so these tests shouldn't be doing
it.

Additionally removes some tests that expect the assignment operator to
fail, which is contrary when a copy constructor works perfectly well.

m_quotevalue of the attributes did not explicitly set or copy the value
of m_quotevalue. This means that the memory was undefined but it worked
as we were doing a replacement in-place

However, this can randomly blow up on us if the heap is used in between
two calls, since the address of m_quoteValue will have changed.

Removes multiple moves which are preventing copy-ellision from the
compiler

Implicit copy constructors or assignment operators are deprecated. This
adds the missing constructors where we need custom operators, and
defaults everything else.

Anything in the config service is global and susceptible to
change by running code. Use a unique temporary directory
that has the advantage of cleaning itself up

If the system is under load the MonitorLiveData
algorithm sometimes doesn't finish before the
process ends. Ensure the algorithm is cancelled
in good time.

Use stable sys.platform over platform.platform

platform.platform() is subject to change. In Python 3.8 it changed
to return mac_vers(). sys.platform is guaranteed to return a stable
string for platform identification.

Add downgrade setuptools instruction until #29010 is fixed

Delay Initialization of Code Editor Algorithm Tooltips

Update muon training course

Merge pull request #28979 from mantidproject/28982_ImproveErrorCalculationOnMonteCarloAbsCorrections

Improve the error calculation in MonteCarloAbsorption

Reset peak HKL if outside tolerance in IndexPeaks

Pick off a couple more unreliable tests

Fix deprecation warning

RE #29002

Detected by address sanitizer

Drops the test time from >100s to ~2-3s and avoids
timeout when running in parallel with other tests
and loading can be even slower.

Merge branch 'unit_tests_ununtu_20_04' of https://github.com/mantidproject/mantid into unit_tests_ununtu_20_04