Improve speed of SaveNXSPE

Fix minor typo in GroupDetectors-v1.rst

Bugfix for removing cut filter when switching to splatterplot

Fix crash when slice viewer is opened in multislice view in vsi

Refs #11614

Avoids excessive disk writes that slow things down.
Refs #11614

Refs #11614

The main test now actually verifies the data in the file using HDF.
Refs #11614

A stray backtick found its way into the example input

Minor UI changes to DGSPlanner UI

Ignore duplicate lines in pylint

fixing windows builds which do not use precompiler headers.

Fix SaveHKL bug

header

Optimise findNeighbours

Show progress bar

Fix coverity issues in Vates

Fix memory "leak" when retrieving history from Python

Merge pull request #591 from mantidproject/11542_bring_future.pyplot_into_standard_mantidplot_namespace

Bring future.pyplot into the standard MantidPlot namespace

LoadEventMonitors now able to handle period for histograms

Use HKL/d values to get better starting parameters for PoldiFitPeaks2D

Python doesn't seem to guarantee that the shared_ptr will survive
during a chained method call. This is poor coding practice
anyway...
Refs #11589

Merge remote-tracking branch 'origin/master' into 11542_bring_future.pyplot_into_standard_mantidplot_namespace

Conflicts:
	Code/Mantid/MantidPlot/CMakeLists.txt

The 'future' files were still there in another branch, no real conflict here it seems, re #11542

Removing (hopefully) unused #include statements

11585 pylint