Move all report paths to cfg

[Christian-B]

replaces #1274

fixes #1277

This pr moves the paths for reports to cfg files.
Ones in the run dir as path_ the ones in the timestamp dir as tpath

This for a number of reasons.

1. Add information on config file / reports SpiNNakerJupyterExamples#13
2. Put all report files paths in a single place. (or a few cfg files)
3. Support absolute paths if desired
4. Easier to support other path patterns like ebrains (future work)
5. Allow debug integration checks to auto find all file/directories that could be there

run_number moved to in View to Utils level
Includes:
SpiNNakerManchester/SpiNNUtils#297
SpiNNakerManchester/SpiNNMachine#282
SpiNNakerManchester/SpiNNMan#434
SpiNNakerManchester/PACMAN#595
SpiNNakerManchester/JavaSpiNNaker#1224
SpiNNakerManchester/TestBase#61
SpiNNakerManchester/sPyNNaker#1555
SpiNNakerManchester/SpiNNakerGraphFrontEnd#296
SpiNNakerManchester/MarkovChainMonteCarlo#76
SpiNNakerManchester/SpiNNGym#100
SpiNNakerManchester/PyNNExamples#126

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algorithm_timings.rpt moved to the timestamp level as it is a single report regardless of reset (even hard)